Always loved trace gear,I have had loads of heads Ah500smx12,ah300ah300,ah350 gp11 and a ah130 .Must have had 6 or 7 different trace cabs too .Currently I have a ah250mk4,ah250mk5,blx150,1048h,1518 and a 1028h.
The valve stuff I have is a V6 and a V type pre amp and my pride and joy which I have just managed to get hold of is a V4 head.
The tranny stuff is great and the smx with the valve blend was really usable.The V6 is big and full sounding and can get dirty if pushed but the V4! Well it really is a beast,2 channels so foot switchable and can get Filthy dirty,valve compressor and on board biasing led's.It really is the dogs danglies. With the tranny stuff I always tweaked the graphic etc but with the V4 you just plug in with everything set flat and bang! It just sounds fantastic. So personally the valve stuff just sounds better but I keep one of the ah's just to chuck in the van as a not too shabby back up.