I recently had to purchase a new one and fast - four hours after the old one died, I was on my way home with the new one. I used the same strategy I did six years ago. I bought the top of the line amongst the newest series of a brand name that provides service here in town.I got my money out of the old one, so I'm hopeful this strategy will work again. Of course, I use it for engineering design and for all office related work, so top of the line powerwise is a necessity for me. Spending an extra five hundred over five years is worth it, given my requirements. Mind you, it still hurts.
Good luck.