3 subs = 3 amps?

Hi guys! I was wondering if I can get some advice.

Currently, I have 3 15" JL Audio w3v2 D4's in a chambered box. I also have 3 Kenwood KAC 929's. Each amp is powering each sub. I also have an AudioControl Line Driver and Matrix in the mix, but that's not really relevant I think. I have plenty of power running the system - I have an Optima Red Top and an HO Alt as well, so powering my setup isn't the issue.

My issue is SPL. I am going to be competing in SPL comps in the upcoming months, and I need to get as much SPL as possible.  My system sounds really good, and it really hits hard, but I'm thinking I can go higher with the w3v2's

Is my current 3 amp set-up good? or am I not using my subs to their capacity? Should I keep the 3 amp set-up? Should I get different amps? Should I buy 1 amp to power all 3?

Basically, what should I do to push my subs to the limit? Or am I already doing that and keep what I have?

well yeah, I already know that.

That's my question though, to get every small inch that I can out of my speakers.. should I stick with my 3 amp set-up and just get different amps (that are 2 ohm stable) and better one's then the Kenwoods; or should I get 1 amp to power all 3 subs. Again, clean maximum SPL is what I'm going for here.

hard to win any spl event with w3 its more of a enrty level sub you will go through many of these if u push to hard

yeah I know my amps are my weakest link. Only reason I used them is because I worked at Best Buy at the time, and I got a good discount on all 3. I'd like to use 3 amps. I'd like to use JL or Alpine amps. Any recomendations on models that would best match my subs?

W3V2 is an entry level sub? How so? This is news to me! I never heard those two words in the same sentence before.

entry sub = stamped basket =low power handeling =not an sq sub 

spl sub= cast basket = stiffer cone = dual spider = much larger coil for power handeling=

yeah, I didn't think they were entry level. And besides, the 3 I got - they kick, and they kick HARD! They are in a sealed fiberglass enclosure, and they sound really good.

So, being I have the power capable of handling the load, I will stick with a 3 amp setup, and I want to stick with JL as well. With 15W3V2's - which amp should I get to power each sub? 500/1? 1000/1?