I personally don’t like amps by either however that is a shocking generalization and the only person whose opinion really matters is yours. If you like 'em and the price is right, go for it !!

Do try stuff that you think is well out of your price range, one day it won't be, if you want it enough !!

Behringer have a reputation for supplying knock offs (ie they use other peoples technology, use cheaper components and try to undercut the original maker). I personally cant say if this reputation is deserved, I have had several Behringer products, they have been VERY average but have done there job.

As for Peavey, well I have currently have a Peavey Cirrus 4 string bass (which is lovely). Back in the UK I have a Peavey 112 W Bandit combo which is a dog. It is great for death metal and nothing else !