Fast Intel SSD
The Intel X25-M SSD is pretty much the fastest on the market. You can buy it by clicking here:
Intel X25-M Mainstream 80 GB SATA 2.5-Inch MLC Solid State Disk (SSD) SSDSA2MH080G1C5
Check out this benchmark at anandtech.com, especially the random write performance. It completely blows away the competition.