hi Guys, my pockets aren't too deep for my new Plasma, so i'm doing some serious shopping. 3000:1 seems to be the average Contrast ratio for EDTV and even some HD. but i saw one that was at 5000 ( i think it was that 42" HD at wal-marts site for $1999). As i'm surfin the web for info and prices, can anyone tell me if these specs will for certain make a huge difference in picture quality? or are they going to vary from tv to tv? could a 5000:1 on one t.v. be no better than 3000:1 on another? any info on this would be much appreciated. we are planning on buying in May, so i still have some time to sort through all these options!