Ok, so right now most of my system is yamaha, so for better or for worse, I would like to keep it that way. I am asking your opinion on a few matters. I have looked at the KX-580, KX-530, KX-500, K-850, K-720 and TC-920(B) I am wondering which of these you think is the best. I know it is up to my ears, yes, but in general what have you found? I also know that the K-1020 is very high quality as well as the KX-930, but my price range probably tops out at about $200. Another question I had is how useful are the various Dolby NR settings? My previous TC-520 had Dolby B only, but I am going for an improvement. All of the ones I stated above have B and C EXCEPT the TC-920(B) a few even have B, C and S. How important is it to have C or S? One more question I had was, how much better are the amorphous heads versus regular? Also if you have other suggestions along these lines I am open to you opinion.