I've had my mbp since the summer, after the sr update, and I would never go back to windows. I used a friends hp the other day, with windows vista, and it was a terrible experience. The computer labs at school are bad too, there are about 5 full time and a number of part time, computer technicians for a community college.
I love my mbp, also on a side note, last year there was one mb at my school, that was it for about 1500-2000 students, than this year I've been bringing my mbp and than a bunch of brand new mb's, and mbp's have popped up.