I have a 7100 that I've had a little over a month. I have no experience with previous BBs. I was concerned somewhat about using SureType and it did take a couple of days to feel comfortable. I, too, was getting frustrated re-typing words until I recognized when to move it into Multi-tap mode. What also helps is a spell checker. I don't get anywhere near the emalis that some of you have mentioned, but I do have to monitor and reply to more emails than I do phone calls and still really like the 7100.
The screen washing out in sunlight could be a mjaor issue for someone who is outdoors a lot. Just moving it out of direct sunlight, shading it, for example with your body, does make it rat least eadable even if it is not the greatest.