G2's good choice, coated batters will give the warmth. New heads will find your snare and toms losing that deadness which sounds like you have from munted heads. More resonance gained by tuning resonant head.
You really should take interest in learning to tune your drums, check out the drum bible, or get a copy of T.A. Drums.
With fitting new heads you need to tune them properly to get a decent sound out of your instruments and it will also prolong the head life, and help keep them in tune.
