Get teh w6 if at all possible. Even if it'* discontinued, you're getting one hella sub.

You sure... they are just w6 not the w6v2....

I think it'* the old top of the line one. Not 100% sure but it makes sense.

i think its mainly different wiring configs for multiple subs

They look really different too... the w6 looks like a w3 where as the w6v2 looks like a w7... so there may be some difference in the cone too

ya i was just talking about the w3 and w6

the w6v2 looks alot like the w7

Oh ok, I thought you were talking about the difference in the w6 and the w6v2...

Now for boxes... I think I am going to get a custom one built... should I go ported or sealed and what is the advantage if I was running a 15w6? Thanks!

I think you would do good to keep it simple and go with a sealed box. It provides good sound quality and are simple and inexpensive to make. I would sugest you NOT get a bandpass box. Even though they can make a sub PUOND they don't provide as 'good' sound quality. I've found most to be just loud. Also it is harder to hear the sub start to distort if you are running them hard. Almost all the kids that came back to me with blown subs either had bandpass or didn't understand the first thing about speakers.

As far as the advantage of running a 15W6 what are you comparing it to a 15W3? Advantage over what?

I was asking the advantages of ported and sealed boxes on a 15w6 sub... but you pretty much just explained it...