The OP asked about the best amps, which is a matter of personal opinion.
The choices are vast these days, from lead sleds to micro mini. As others have
already posted here. Your tone is in your head, your hands, your rig and instrument.
There are all kinds of terms used, classic tone, modern, scooped mids, sparkly highs.
So, what is best is subjective. Perhaps we can tell you what is good, but best is hard to do.
I'm a boutique guy, and haven't bought commercially for some years now, maybe with the exception
of an Augilar DB750. But Markbass, Genz Benz, Mesa M6 & M9, EA iAMP 800, Epifani 502 & 902, Walter Woods,
ThunderFunk, and then there's preamp/power amp rigs, the list goes on and all these amps are quality.
But you really need to test with your ears and not by suggestion, not just in a store but on the gig.
I know that may be difficult, but most of the brands I mentioned give you a trial period, (that why buy boutique)
Find something that is going to fit you needs and satisfy your tone. I have and it keeps me from jumping on the
latest band wagon.
