Replying to ARMADA AR5s a coupla questions!

Ok I need some info!
I've just got hold of some Armada AR5s which are a pain to get hold of in the UK so am well pleased!

Question 1: Have I made the right choice buying them rather than Troublemakers like I had last season? Which were amazing and looked fookin cool! Bloody rocks in Risoul, France destroyed them!

Question 2: I'm on/off the park about 50/50, where should I be mounting my bindings? Dead centre? a bit back? What? I've only just heard of people doing this! I've been setting up my own skis for years and never placed them anywhere other than the factory set centre line marked on the top.

Cheers guys!