Hey, i received mine about a month ago, i had a p4 2.4 , geforce 4600 ti, 756mb ram, and to tell you the truth, i love this thing!! i sense most of the differences around game load times, frame rates, and outright visual graphic wonderfulness. yes, it's quite the price to pay, but the way i look at it, it's about $1k/year ammortized over 2.5yrs until the next one i build. it's a hobby, i like it, and to be frank, could care less what others think as to price/performance relative value. i'm the one working and making the money, not anyone else. of course, everyone is entitled to an opinion.
Have fun with the new machine and don't sweat it!!