I am swithching from guitar to bass, just because.

I'm pretty much decided on the bass im gonna buy, but i need an amp. I listen stuff like RHCP, metallica, rush and some others, and was wondering what kind of amp to get. I've probably got around $350 canadian and i need some recomendations
my friend got a peavy bass for around 300 canadian i dont know wat kind but ya it seems pretty good