I don't know how much you want to spend, but this is an other option.
Newegg.com - OCZ RevoDrive 3 series RVD3-FHPX4-240G PCI-E 240GB PCI-Express 2.0 x4 MLC Internal Solid State Drive (SSD)
With this you can avoid SATA altogether, its a board that plugs in PCI-e.
These SSDs are FAST. This one, like my original OCZ Revodrive 120gb run two sets of chips in RAID-0 which is a huge performance boost. This one is way better than mine too because it actually has TRIM. Although I have not had any problems without TRIM so far, I have only had my revodrive for 2 years. SSDs have really dropped in price, I payed $300 for my 120 Revo w/ no TRIM support and now you can get this 240GB w/ TRIM AND even higher peformance for $50 less. Anyway if bandwidth is a huge concern these things won't dissapoint. Do research first and be sure it is sure to work w/ your motherboard (they can be picky).