[saintsinner]

if you have a tight budget and want sound worth much more then what you spend, i say go for hifonics. MBQuart is pretty much the same. (unless the german one)

i really don't know much about the zeus series from hifonics, but the brutus series kick a**.

i have zeus components, Brutus amps and subs. i am very much satisfied with the way they sound.

XXV series competes with the best in the market and are highly underrated. you might want to look at at XXV gemini which is a 4 channel amp.

there are many brands in the market, are you sourcing these from the US?

What specific equipment are you looking for?