My gf has 2 E8v3's in a ported box. I believe 1.5ish cubes tuned to 35Hz. She listens to country, rap, hip-hop, dub step, rock, pretty much everything. To me they sound great. They hit the lows very well, especially for 8's and are definitely punchy for rock and country. I have a single SA-12 in a 2 ft^3 box at 32Hz and it sounds amazing as well. I would assume that the SA-10's would perform quite similar to the SA-12.
IMO I would go with 4 8's though. It would sound very clean in the proper box and will definitely get loud.