I've owned the HL67A750 for about a week now, and while it's hardly enough time to give it a thorough review, I can say I'm happy.
Prior to this I was using an InFocus IN72 displayed on a 76" dalite high contrast (light gray) screen... so I have plenty of DLP time and wasn't concerned about buying DLP.
The HL67 is better in every way but size than my previous setup, of course, and the price per inch is great because everybody wants a TV you can hang on the wall these days.
Of course there are many opinions, and many uses for a TV, but after weighing the options for my usage (TV 50%, movies 20%, games 20%, random PS3 usage 10%) I chose to stick with DLP.
I've been using the TV without cable, in fact I'm using a set of radioshack rabbit ears (the new UHF is in my truck to be installed tonight) and in the Niagara, ON region I'm getting 11 GOOD HDTV channels, and 20 GOOD analog channels. The built in channel guide is decent, though not as good as either Rogers or Cogeco (SI or motorola) digital cable box guides. The main thing is you can see what's playing, and what's coming up on most digital channels.
Keep in mind my old projector was 480p (720x480), but larger than this TV, but I'm seeing things I've never seen before on TV. I watched the Canadians vs. NY Rangers on CBC-HD last night and I saw every little skate mark in the ice... outstanding.
Would buy again.