We had our first artificial tree, not pre-lit, for years, maybe 15+. In 2009 I bought a pre-lit. Last year only about the middle three feet would light so I added 6 strings of lights. What a pain! This year I have a new pre-lit in a box which I've had about 5 days. I'm keeping my fingers crossed that it looks nice. I really wanted one from Balsam Firs or something like that but holy cow they started at $600.
On a different note, did anyone actually get a live tree and have any luck with it? We tried and found that our ornaments or most of them anyway were way too heavy and the branches on the live tree couldn't handle the ornaments.