Which sub to pair with my amp?
 

Well I ended up getting an Infinity 311a to start out with, nothing fancy until I have more extra cash to put into car audio.

I can't decide which sub to use with this amp though.

Looking at either a JBL GTO1202D:

4ohm DVC
300W RMS

...or a Kicker CompVR 12:

4ohm DVC
400W RMS

Which one of these subs would better suit that amp wired for 2Oohm?
I can get either for $100 on eBay with shipping, so I can't decide.

I listen to a huge variety of music, including metal, rap, techno, etc. so I'm leaning towards a sealed enclosure.

One other thing, it says on the amp box 312W RMS x1 at 2ohms, then 347W at 2ohms dynamic power. What are the difference between these two?

Are there any other subs that would sound better with this amp? Suggestions welcomed.

Thanks.

With an amp like that, I dont think you will be able to tell the difference in terms of sound quality. JBL is probably louder than Kicker. So with this set up I would go with JBL. Tough call for me, cause I would strongly recommend just spending a bit more money off the start to save you money on future upgrades, if you are a bit serious about music.