finally the choice is in made.
 

after long search and sleepless nights i finally found what should i buy,which also fits in my pocket.
i ended up going for a 12" IDQ V3 or 12" boston acoustics G5
now the only question left is..
should boston acoustics G5 be used for a sq application?
idq sq is to die for(my opinion) but what about G5..can it be compared to idq?

i'll be using the chosen sub on AUDISON LRX 1.1K

thanx everybody on this site for all your help and guidance.

that is a nice amp

I think you'll be pleased with either choice.

thanx guys but i need a more detailed answer..because this will be my final sub..i don't want to look for other subs again

Been there done that.
Audison and Image Dynamics makes a very sweet combo.

Go for it.

I'll second that, audison and image...

I ran an IDQ12 v.2 off my srx2s and I'm about to try the new idq12 V.3 off an lrx 5.1k.

Very nice sounding combo...