well yes. which is best out of:

Sansamp gt-2

Metal muff

Damage Control Demonizer

Line 6 Uber Metal

i play machine head, metallica, iron maiden, lamb of god and yeh. need some heavy distortion and some 80's style tones.
since you need a new amp, why not save up and get a good amp thats suited for hi-gain, rather than wasting money on distortion pedals.

Amps distortion > pedal distortion.
Peavey 5150, LTD EX400BD, tubescreamer, and a whole lotta fingers