I know a handful of people that bought Samsung DLPs in Costco (here in Canada) over the last 3 years (HLP, HLR, HLS, 720p, 1080p).
One of them had a high pitched noise (color wheel?) a few months after purchase. The light engine was replaced. Nobody else had any problems with them.
Needless to say there is no other TV (in the same price range) that is more HTPC friendly: easy 1:1 mapping, no ridiculous 766 or 768 lines of resolution, well known service menu codes, etc.
Go for it! From what I know you have no more risk with them than any other brand name. And their service is well above average (at least around here).
Have you ever seen a single TV/projector model discussed on AVS that wasn't claimed to be complete trash?
Diogen.