I have a V3 and have been very satisfied with it, but I'm still in search for my good tones

I've found decent tones within all the channels that I can work with, but I was just wondering this anyway...

What would be better to use as my lead channel (where i do all my soloing/shredding)? channel 1 or channel 2? and which would be better for rhythm gain?

also, my clean channel preamp volume is maxed out, but thats the only way i can get it to match the volume on my gain channels which are between 2 and 3 (the clean drive is at 6 btw)
I just want a good clean tone with a lot of attack (imagine a clean but more funky david gilmour tone mixed with frusciante) but i don't want it to get broken up easily when i turn my master volume up high

any help would be appreciated