I got my first MBP on Wednesday (already have an iMac and and iPad2). I must say, though it has only had 4 days of use, I am absolutely thrilled with it.
One of my biggest concerns before pulling the trigger was all the complaints about heat issues. Maybe I got lucky with mine, but (in general) this thing is great. It is sitting on my bare legs as I type this and is barely (pun intended) warm, and that's only at the very back left-hand corner. To be fair, when running full out on the discrete 6750 graphics, it does get hot, but so does every other notebook. gfxCardStatus is a must if you want to use Chrome or Firefox without the discrete card taking over. We have watched a lot of Netflix in Chrome with the integrated graphics forced - no playback issues, no heat issues, and the fan stays quiet.
Having had (or extensively used) notebooks from IBM (pre-/post Lenovo), HP, Dell, and Fujitsu, I can also say that this is by far the best built machine of the group. The only keyboards that come close are on some of the ThinkPads, but this is still the best feeling keyboard I've ever used. I like it better than my iMac's wireless keyboard.
Finally - with regard to performance - this little fella smokes. Even with the standard rotational drive, I'm very impressed with how much faster it is than the iMac (a mid-2010 with the 3.06GHz i3).
I can't wait until tomorrow when UPS delivers my RAM upgrade!
Some day, maybe in a year or so, I'll look into getting a 256GB SSD from OWC (or whoever is the reigning king of performance at that time). My last Dell had a SSD and it was nice, both from a performance and a safety aspect.
Best wishes to all of you, and thanks for all the excellent posts on this site - many of you contributed to my decision with your thoughtful responses to other people's questions.
Happy computing!
DJ