raid controller for Rosewill RSV-S5?

[myktek]

The enclosure I want to get.
http://www.newegg.com/Product/Product.aspx?Item=N82E16816132015

The card i saw that people recommended.
http://www.newegg.com/Product/Product.aspx?Item=N82E16816115076

I plan to run Raid5 and I only have a PCIE 1x slot available.
I need a raid card that can handle this enclosure and maybe a 2nd one in the future.
So 2 esata ports are needed atleast.

The raid card that comes w/ the enclosure from what everyone is saying is crap.