Peavey Valveking

I currently have a Peavey Valveking 112 with upgraded tubes from Euro Tubes.  The clean channel is a whole lot better since the tube swap, but there are still some issues with the overdrive channel (fuzzy).  I am assuming that a speaker swap would help some.  I know PRS uses 12' ET65's in his combo amps, would these be better than a Retro 30 for great cleans and smooth overdriven tones?

(I play blues, classic rock, and cleans - Les Paul Guitar)  

See:

https://wgs4.com/peavey-valveking-112-best-replacement-speaker