Need help making a decision

[Destram]

So, the plan is to run four level 4XL 15s. I'm thinking about either getting four AQ 2200s and using one per sub or two Sundown 4500Ds and running two subs per amp at .5 ohms. The price difference is roughly $850, depending on what the price on the 4500s is by the time I get the money.

I know that the Sundown amps would be the better choice, but do you guys think the price difference is worth the increased power?

Edit: Electrical will be up to par. Just want to know if that big of a price jump is worth it or not.

[Mosin]

I'd save for the Sundowns IF you plan on holding on to this system for a while. If you plan on down-grading or selling it get the AQ's.

[Destram]

Downgrading has never been an option for me, unless you consider getting out of it completely downgrading.