My two cents
I'll throw out my review after 48 hours of use.
First - the pros:
- Accuracy. For me (YMMV), swype was fairly fast, but too inaccurate for my taste. I found myself spending more time correcting, bringing my overall start to finish time for a message down. With 8pen, I know what letter I'm getting all the time. As long as you make the correct gesture, you get the right letter. Even without looking, after only 2 days, my accuracy is pretty good. I'm hoping it will evolve to true one-handed typing without looking.
- One handed ease. Yes, there are some that can type or swype one-thumbed with accuracy and ease. I'm not one of them. Although swyping with one thumb was fairly quick, see first point re: accuracy.
- Speed. I know. If you hear "learning curve" one more time in these threads.... but once you practice, it does get quite fast. I'm still having those "where is the k again?" moments, but after writing each letter a dozen times, then the infamous "the quick brown fox" sentence a couple more, it gets pretty darn intuitive. I'm surprised how quickly my speed has gone up over just two days. Combine this with increased accuracy and I'm impressed.
- custom gestures. With just a waggle of my thumb, I insert my name. Different waggle inserts my address. I have a few more custom phrases I find myself using in work emails that can be inserted effortlessly. AWESOME.
Cons:
- punctuation. Seriously? No ampersand (&)? There are copyright symbols, degree signs for temperatures, but no "&"???
- (for now) - no voice key. Yes, it was promised in the initial release, but they opted to get it available for more devices and haven't added the voice key yet.
- the curve. Yes, it does take work.
- along with that, limited trial period. Had I known that the first 24 hours were going to make me look like a buffoon trying to type anything, but it would get better, a 5 day trial may be a good idea for the developer to try. I think they'd sell more if people got a decent chance to play with it for more than 24 hours.
I shelled out the buck and a half. I think it was money well spent for what I need.
Then again, I could have wasted a whole dollar & a half if I decide to jump ship from the X to the Pro in a couple of weeks to get a physical keyboard back...