Promise SATA300 TX4 - 2 port Promise FastTrak TX2300 - 4 port

http://www.supermicro.com/products/accessories/addon/AOC-SASLP-MV8.cfm

Supermicro AOC-USAS2LP-H8iR:

• Great price
• No audible alerts
• Like LSI 9261-8i but UIO

http://www.supermicro.com/products/accessories/addon/AOC-USAS2LP-H8iR.cfm

LSI 9211-8i:

• software RAID (RAIDZ)
• needs cooling
• IT Firmware
• 6Gbps SAS2
• LP

http://www.newegg.com/Product/Product.aspx?Item=N82E16816118112

3Ware 9750-4i:

• SAS2
• 512MB
• LP

http://www.newegg.com/Product/Product.aspx?Item=N82E16816116109

LSI 9260-4i:

• Forward connector location

http://www.newegg.com/Product/Product.aspx?Item=N82E16816118106

Supermicro AOC-SAS2LP-H8iR:

• Low profile
• Forward connector location (needs longer cables)
• Has buzzer for audible alerts
• Lower cost than LSI version

http://www.newegg.com/Product/Product.aspx?Item=N82E16816118132

LSI 9261-8i:

• Great connector location
• Best choice for 1U
• No audible alerts?

http://www.newegg.com/Product/Product.aspx?Item=N82E16816118132

9265-8i:

• Latest and greatest
• 6Gb/s
• Dual-Core 2208 ROC
• 1GB cache
• DDR3/1333

http://md-storage-data.com/channel/news/review/2011_04_28.html

http://www.newegg.com/Product/Product.aspx?Item=N82E16816118159