Had the 8900 for about 2 weeks, used an 8320 and 8100 before. IMO the 8320 is faster for me to type on because the keys are farther apart than the 8900 and they have flat tops (the 8900 keys are angled to the outside for the 2 thumbs). Pressing on the 8900 keys requires a tad less force so it's easier to double up a letter. Not a huge deal really. Plusses of the 8900 are many: screen brilliant, speed is very fast (loading photos, documents, whatever), media player is excellent for audio and video. email is the same as always, excellent. The speaker is better by far. People complain about the battery but my wife (8320) and I took the same 3 day trip, kept our phones on, and her battery died before mine did (still 10% after almost 3 days). It's a great phone IMO. Way better than my 8100 (which I loved) and better than her 8320. The clock mode rocks!
BB 8900 Tmobile, Moto Droid Verizon