WOW, I wish I could afford such a great machine. It should be technically viable for years. I do agree with the posts stating that the price does seem very high. One of the things I hate most is running down hardware price quotes, but in this instance it would be worth the time, considering how much money you're willing to spend for a long term investment.
Warranties are always an extremely mportant factor for me. The problem is, these days I don't know which way to go. I've always been very statisfied with Dell, but other people claim just the opposite, and I have no reason to doubt their word. I guess it just boils down to a crapshoot. You put down you cash and take your chances. Best of luck.