It's about leveraging the predictive text
I can definitely anticipate all those things you listed about Android as awesome and much needed departures from BB. The browser is always a last resort! And the minimal app selection for a family of smartphones makes me feel like I'm not getting my money's worth.
My main concern is that, like you said, I use my BB primarily for weather, emails, messages, etc. Apps come in handy when all of that is done. BB excels at messaging - can a Droid keep up? From what I've experienced, the touch screens don't even compare to BB keyboards. Just curious, have you typed out long emails on your Continuum? Which feels more comfortable, Droid or BB?
Also, screen size isn't too much of a worry, because I've always got a purse or coat pocket I can throw my phone into. I'll worry more about dimensions when the D3 is released.
Thanks for your post btw, really informative and helpful!
I've found that typing on a soft and hard keyboards is a very different experience. It's not just the feeling of hard keys vs smooth glass. Like accurately hitting the right letter every time is what I was concerned with but it's a whole different ballgame than that. The difference is the predictive software that keeps guessing what you are trying to type. For years I loved treo/bb keyboards because I could type messages with one hand, many times not even having to watch closely. You'd just feel your way. So if I wanted to type a 30 character message, I'd be pressing 30 keys plus spaces and maybe a couple of backspaces because little keyboards are easy to make mistakes on. With a soft keyboard I might only have to press half that many soft-buttons because I'd be typing the first two or 3 letters of every word and selecting the word from the group it continuously offers as guesses. You can't do that without a touch screen and its nice when your finger only has to travel a fraction of an inch from the soft keyboard to the predicted word. It's very efficient if you LET the technology help you and stop insisting on typing every letter.
I'm still getting used to doing it that way and leveraging the predictive software the best way. I have a hard time getting away from the old way of finding and pecking every single letter and often catch myself doing that on the soft keys and yes that's way worse than with BB hard keys. Also I find that the more often I can use voice-to-text, the more I like it.
So to answer your question, I actually don't type out many long emails on a mobile either way. One of the nice things about that 'sent by bb' line they put in there means you can get away with being extra brief without coming across as an a-hole.

However, if I really wanted to bang out a few paragraphs, I would pick the android in landscape mode and really pay attention to the type-ahead suggestions. I'm convinced I could type the most words per minute that way and save A LOT of stress on my poor thumbs. But getting into that message interface isn't a quick, one-handed operation like you are used to.
If I'm primarily going to be texting and quick messaging all day long, I'd rather do it on a bb. For most other things its Android.
On an unrelated note, one more PIM-related activity which sucks on bb is the calendar. This is perplexing to me. I like to use multiple outlook and gmail calendars for various things (kids activities, work, personal, etc). Along with not being able to find great task/list managers for bb, I tried very hard to get the calendar to be nice to deal with. I failed, over and over. On Android, I can find several better options for that then the best BB has to offer.
Also, I love the widgets and how you can make your multiple home screens show you anything you want with endless options.
Again, if I KNEW that I'd be spending 98% of my time doing a small set of activities that WEREN'T lists, calendars, mapping, or web surfing; then BB would save me time because I just map those activities to hot keys and can one-hand operate with most things. Like the windows phone commercial, in-out then get on with your life.
But now that I have access to unlimited awesome apps that continue to re-invent how we can leverage a pocket computer... it feels like it did when I got my first Treo and really started to explore what it meant to have a true digital assistant in your pocket. The BB feels like an evolution of what I've always done, Android feels like a gateway to help me figure out new and
potentially better ways of doing things I haven't even thought of yet.
One more anecdote. A few weeks ago I was going to pick up something I bought off craig's list in another town so I needed to use mapping. So I opened up gmaps on 'droid and checked that email from my bb to start typing in the address. Once I typed in the first number, the ENTIRE address popped up in the suggestion box. Awesome, apparently it mines that data from my gmail and knew what I was trying to do the instant I tried to do it. So the old way was nice; get to email in the same device, copy-paste, etc. But this new way renders that completely archaic.
I'm sure BB has 'smart' integration like that, but the only similar experience I had like that was it's excellent World-mate travel assistant where it automatically imports itineraries from email. That's available on android too.