Not seen many neg comments on the Sandisk lin so far. Check newegg and only had significant numbers for the 120 gig drive - stats loog very good.
As to real life performance, I don't think there is enough difference to use as a make/break choice. I normally use "least user problems" to group some SSDs and then let price determine the winner.
My list normally looks like this: Samsung 830, Curcial M4, and Intel 510/520.
I hear that the 256 Gig m4 was on sale for $220 @ ???
OK found it: http://www.overclock.net/t/1249604/buy-com-256gb-crucial-m4-ssd-for-219-99-fs-from-slickdeals
I have both the m4 (2 x 128 gig) and one 128 gig Samsung 830