Well-supported SAS RAID card for 6.3?

[Josh Endries]

Hello,

I'm buying a new server and will put 6.3 on it and would like to use SAS; 
normally I use 3ware SATA. I've been reading a lot including man pages but can't 
seem to find definitive information on SAS cards that are well-supported and 
work well. I've found reports that cards listed in man pages don't seem to work, 
and confusion about chips/cards. Does anyone have experience with recent SAS 
cards or machines with integrated chips?

Thanks!