I'm looking for a new sub(s) to replace an older, ported 12" Velodyne. The Velodyne is loud, but not so tight. Will be 80% music, 20% ht. Mostly looking at rhythmik or maybe psa (or others?)? Don't want to go much over 1k for now. I like the f8s for clarity of the upper 50-80hz range, but don't want two, which I think would be preferred.

Current room is approx 20x15x10, but may move in next 12-18 months, so erring on a little overkill may not be a bad idea.

If I went 12" how much do you gain with the f series over l? For the price of an f, I can basically get two "l"s. or if the "f"s are really clearer, could maybe get one now and one latter. Not sure how much I'd use the extra electronics. in my old age, tend to use audyssey, set the crossover in the amp and use direct mode....

I also like the idea of a 12 or 15 for low bass, and an f8 for upper bass, but blending and getting the crossovers right seems like a pita.

Other options?