Any recommendations for a SATA RAID controller?

[ATLien247]

I'm not happy with my current LSI Logic MegaRAID SATA-150 for various reasons. What are some other controllers that I should be looking at?

 

[ATLien247]

It occurred to me that my problems might not fall squarely on my current controller. Perhaps the drives I'm using are part of the problem. I'm using four Maxtor DiamondMax 10s.