Okay, here is my first impression after using D2H HD for 2 weeks.
Pros :
1. Picture-Quality : Very good picture quality. HD channels look stunning. SDs are OK. Got the PQ reviewed buy a longtime TSHD friend (that's you krish199). No major differences as per him, and my eyes too. I am talking about PQ on a 51inch TV. There were some comments on D2H being good only upto 40inches - no such worries. Some channels look stunning.
2. Cost. first month is anyway free for Platinum HD. Other packs are definitely cheaper than TS.
3. Service : installation was done on the 2nd day after booking. Remote replacement was also done in a day.
Cons :
1. Hardware : really crap remote control. Buttons are hard, and the whole remote gives you a toy-ish feeling. was replaced withing 10 days. As someone said earlier, you would get used to this. My previous Hathway SD box remote was also a total crap.
2. Service : The engineers are not confidence-inspiring. They have the local guy look and working - and do not seem professional.
Others have complained about the lag time during channel change. I measured multiple times - channels change in 3-4 seconds. Not more than that. Mine is a white 555-B HD STB. The STB gets heated pretty quickly.
I can't comment on sound quality, as I only have the TV speakers to listen to.
Overall, satisfactory, if not great. But if you bring in the cost factor, you might feel happier.