well on that one mate I'm not sure of and good call, i know that on my dream 600 the C tuner was kinda shite, everything looked washed out and that and when there was a scene on TV where it's white in the back ground looked like a nuclear blast was taking place behind them, so maybe hang in there till some one else advises.
I've just put a SAT tuner in me dream and PLI jade and the colors are looking a lot better, not the best and now and then a little washed out.....but i have 3 things i need to consider.
TV....
Tuner
Image....
So until i go high def then it could be the TV if you get me, i like the PLI image though so can't complain.....