Re: Mapex Meridian Maple Heads
I think you'll notice a pretty solid increase in sound by replacing both heads.
There isn't really any "better" head, just different heads. The G2s will be a bit lower pitched, have a bit less sustain, and be a little thicker (tonewise). The G1s will be... well, the opposite. I would personally go for something in-between like coated G12s on rack toms and G14s on floor toms, as I generally like single-ply batter heads better.