I'm looking for a good RAID controller any suggestions. Any help is greatly appreciated!!!
LSI LOGIC LSI00202 Megaraid SAS 9260-8i 8 PORT 6Gb/s SATA RAID controller 512MB PCI-Express Kit
Depends on the application.
HBA's can be had for about $100-$150, Then you can get basic LSI cards like the 9240-8i for about $130 that do all the major raid types as well as JBOD.
I use the 9240's, they replaced the 9211 that you see alot of people use in FreeNas builds, the advantage is that the 9240 is JBOD out of the box with out flashing the bios to IT mode.
Ya, listen to Ratzzz. As long as it is LSI, you will be fine. There was one shown in the Proxmox build. Here's the link: https://teksyndicate.com/videos/proxmox-how-virtualize-all-things