If you're looking for some cheap SSD storage, SATA's for you. Right now, Crucial's 2TB MX500 SATA SSD is selling for the lowest price we've seen, $200 at Amazon. At launch, the 1TB unit was selling for $260, making this one of January's best tech deals.
Crucial's 2TB MX500 can read at up to 560 MBps and write at up to 510 MBps for sequential loads, with a 95K and 90K read/write IOPS rating. They also support hardware-based AES 256-bit encryption, meaning you can use them with encryption software, such as Microsoft's BitLocker, without any adverse effects.