I guess I would probably be in the minority here, but I'm a newb so don't flame me!
I recently switched to E* from D* two weeks ago and just started receiving sat HD (had OTA for 6 months now). I've compared my OTA to "HD lite" stations like Voom and while it does vary from program to program, every HD station I receive looks unbelievable on my 46" DLP (especially when switching to a SD station).
For the last few weeks I've had the service, I have watched and recorded 75% of my programming from only a few stations. MonstersHD, RAVE, HDNet... I could live with fewer stations in higher HD, but I'm sure that MonstersHD and RAVE would NOT be high on E*'s list of stations to keep in HD.
I'm anxiously awaiting FoodHD (please come soon!), but I'm sure there are many people that would poo-poo that station in exchange for a Sci-Fi HD (though it's not available yet) or MTV HD. I wouldn't watch either of these.
I hope E* continues to add more HD programming at the quality it is now and eventually work toward increasing that quality over time.
While HD lite sucks, it still blows every SD station out of the water.