most of the sandforce issues are resoloved and/or over exaggerated.
It is a near non existent issue for most normal folks.
You can expect to buy and use a sandforce ssd without issue.
They perform well and sell for cheap making it a great value.
That is all.
I forgot to mention it's popular and "trendy" to hate on Sandforce and OCZ for some beginner troubles a while back... But technology changes quickly and it's more a myth and legend at this point than a reality.
Even OCZ has moved most of it's line up to newer controllers but people still hate on them.
I think Sandforce takes some crap because OCZ was a big player originally in them- and the OCZ haters jumped on board with bashing Sanforce too.
I have owned 15+ Sandforce drives and never had an issue. In contrast I RMA the only CRUCIAL M4 I ever owned.. so.. I'm not sure how much I believe the idiots crapping on Sandforce.
I personally believe with any electronics it comes down to good and bad luck and nothing more.
If I was buying today I would look at a Samsung or a VERTEX4 (Vector if it was cheaper) as my first choice. They don't use Sandforce. If I had a limited Budget I would not hesitate to grab a deal on a sandforce controlled 120GB VERTEX3 ($>80) or a BEASTY TOGGLE NAND VERTEX3 MAX IOPS ($>110) over a crappy crucial m4 or like non sandforce drive.