Rockford Fosgate P3d215 or P3d212?

[danny c]

I'm not new to the audio world, I know all about the 15 being deeper cause it has more surface area and moves more air; I'm just curious which one you would take and why

deeper, as in producing lower frequencies wouldn't necessarily apply to the 15 just because it's larger.

That can be controlled by the enclosure and the 12 COULD be made to go lower than the 15.

Any decent pair of 12's should be very loud.

I'm not a bass head, but I do like some boom. I have a single 12 that is pretty loud.
I can envision having a single 15 at some point, but for me a pair would be overkill, and the space required for a good box would be excessive.

So the 12's for me.