I was looking for a new phone a couple months ago..... so heres my take
Thunderbolt - really fast all around (hence the name), HTC Sense is nice, really nice screen, good cameras, but battery life was very poor partly due to it being 4g and the screen being giant (i feel as if its almost too big, also 4g is useless unless you can use it)
iPhone 4 - also fast, simple, but its just well... an iPhone. dont let the brand buy you. I had an iPhone 3gs and was going to wait until the iPhone 5 to upgrade but iOS didnt really impress me so I decided to hell with that (iPhone 4 has only 5mp back camera when most are 8mp nowdays and the screen is only 3.5", not to mention its over a year old)
Droid X - fast, good cameras, etc. but i don't really like the layout of the basic Android OS and the phone itself was really bulky, which i think is annoying when carrying it in your pocket
Droid 2 - decent, but I hate sliding keyboards because it turns the phone into a brick
Blackberry - NO... to all of them
Droid Incredible 2 (the one I picked) - I really liked it because it had a 4" screen but its still only about as big as an iPhone. Its fast, its got HTC Sense, has 8mp rear camera, and front facing camera. and it actually has good battery life for it being an android, it lasts the whole day and then some if I'm not mega web browsing or playing games
and thats about it
havent played with the bionic but it looks like a good phone minus the size