top 5 amp companies?

[Johnny Vinyl]

Although I understand why you are asking the question, I don't think its a question that can truly be answered. Reason is simple. People have different perceptions and interpretations of what quality and affordability is.

I would set your yourself a budget and go and audition (if you can) several different amps. Every amp, like every speaker, etc., has its own distinct sound and you need the find the sound that suits you. Don't be concerned about which is best.

John