....Ok guys...MY complete Mobile Entertainment system is manufactored by Sony. Except for the subwoofer( Kicker S10L5 )

I want to go with a new setup but am not certain if I should keep sony or not.

I like Sony, my highs are really loud and amazingly clear. The sub pumps harder than my friends 2 12's JBL that he has.

I have two questions to ask.

1. How good is Audiobahn? Is it better than sony? Has anyone had sony and or audiobahn and had any dislikes?

2. Would a 700- 800 watt amp be sufficient to push 2 10" Kickers?