kdoo12; there's people having issues, and there's the manufacture admitting
the problem with their read speeds. Now, I'm not saying it's a massive reduction in read speed, but if you're paying top dollar for top performance, you'll expect not to have some bug dragging speeds down. I think they're on their 3rd fix.
Anyhoo's, the EVO 850 (also Samsung) is what he's getting, and what I plan on getting. Great piece of kit. Just saying to avoid the 840 in case he finds one nice and cheap.
And long may they last Grim on their advertised read speed!