I'm really eager to join the Android Family, and coming from a Blackberry Bold via AT&T, I want that experience to be stellar. I'm hoping for no disappointments.
Then, unfortunately, you will be disappointed. No phone can live up to some arbitrary bar of "stellar" which you and you alone will define.
Every single phone that is made and sold has problems, whether it be light leakage or not being able to be held in a certain way.
If you click on any of the forums listed at the bottom of these pages (Pre, Nokia, Crackberry, etc.), you can find endless forum posts about problems with those phone. That is the nature of technology right now.
Everyone is racing to get the "next best thing" and due to the fast production and evolution of technology, there just isn't time to do standard QA that would produce a perfect phone. (And, unfortunately, companies have to race to the production line or else they will be left behind in the dust.)
Most of the time, you will get a very, very, very good phone. But you will not get a perfect phone nor a phone that doesn't have something that will irk you in some way.
I love my Evo, but there are some things that I don't like about it. But the positives far outweigh the few things that honk me off about it.
Lower your expectations, realize that it is a smartphone and not a magic wand, and enjoy the experience.