I need help deciding which to buy.

So I bought a Peavey Bandit Red Stripe 2x12 a month or so ago, and i think the gain channel even fully maxed out is just lacking that extra gain for a full chug, and the low end seems really woofy if that makes any sense? Kinda like a blanket is over the combo.

So what i need is: *More Gain *Tighter Low end *Your guys help :)

I don't really know much about pedals other than Noise Gates, I've been line in for the last 4 years since I started. All comments are greatly appreciated.