I've searched the site, but I'm looking for current reports.
Looking at Samsung 850.
Any advice is gratefully appreciated.
Define "best" ... cheapest, longest life, fastest under various conditions, etc. I'm running an inexpensive Mushkin Reactor dropped into a drive bay (so, running SATA 2) and it's fine. I think pretty much any SSD will be interface limited unless you get a SATA 3 card, or a PCIe SSD.
Yep. Don't do it without a SATA3 card. There are some nice SSD sleds/SATA3 cards out there just for this reason.