QUOTE(Eiraku @ Sep 3 2013, 07:05 PM)
Oh, they've had a few issues. TRIM issues, especially with incompressible data... SATA sleep/reconnection issues leading to full on SSD failures... Broken 256-bit AES encryption... Forced proprietary encryption that destroys all hopes of data recovery after catastrophic SSD failures. Stuff like that.
See here for details:
http://bit.ly/17Ijsazhttp://bit.ly/17ImUlF"Firmware update issues" make it sound so trivial. Unfortunately I really don't think inherent design issues with the controller chips themselves can be fixed much with "firmware updates" in the long run. They can delay the problems from coming up, but the inevitable will happen regardless.
And we already know Vertex have had issues with dying SSDs as well. Guess what control chips they're using?
I'm a reliability guy, hence sticking to Crucial/Plextor for now, or at least anybody NOT using SandFarce controllers OR TLC chips.
Yeah.. firmware is important to ssd's. sandforce has the advantage to reduce production costs (there is no need for ram in the products, and ram is expensive), thus making them more affordable. The damage caused by previous sandforce chips was kind of ireversible, especially to its reputation (and those brands that used it), even if the recent versions were reported to be much improved. Intel is the only one that implemented it right (it has the access to optimize the codes far better than others)
Afaik, the two common chips in use in most ssd's are still sandforce and marvell.
Not all vertex are bad. Vertex 3 used sandforce, but vertex 4 uses rebranded marvell chip (and its not bad). plextor uses marvell. Sandisk switched to marvell too.
Samsung uses its own chips.
As for tlc vs. mlc, i prefer mlc also. However, tlc with appropriate technologies is getting better. It is likely to replace mlc in consumer grade ssd's in the future.
As of now, imo it's better to get those with a marvel/samsung chip and mlc flash. So far, plextor and samsung drives never let me down (from msata to 2.5" form factors)
For crucial m500, well, i feel safer when a manufacturer provides its own secure erase tool (some tried to use third party secure erase tools but that ended up rma of their m500). M500 lacks of certain features that allow proper secure erase.