I guess I'll post my take on Samsung SSDs and the Magician software, particularly since the latter is getting some minor bad comments, some of which are not justified, IMO.
I have several 830's, 64GB, 128, and 256GB, as well as an 840 Pro 256GB. Very stable SSDs, can't say anyone is better, although I would rate Intel SSDs on the same level. I've had three 64GB 830's in RAID 0 on a X58/ICH10R SATA II board (excluding the un-Marvell-ous SATA 9128) for almost a year now, works perfectly, never a BSOD, wakes from Sleep day after day. No TRIM of course on them, but I do have most of that volume free. Benchmark performance has been rock steady since day one, which is more important to me than ultra speed, at least on that PC:
Great RAID 0 sequential results, given the SATA II interface. Almost perfect SATA II scaling for the 64GB 830, for ~250MB/s read and ~160MB/s write speeds. 4K reads are Ok for this size 830, not much loss for RAID 0, usually the case.
I've enjoyed the Magician software very much, when it is installed I've seen something I've never seen before:
I won't sidetrack onto that topic, but rather interesting IMO.
Regarding the Performance Optimization option, that is similar to Intel's Toolbox Optimizer, a manual execution of GC and TRIM or TRIM-like operations on the SSD. Certainly useful on systems without TRIM, like XP and Vista. Yes, the benchmark test runs right after the Optimizer, but you can manually stop the benchmark as soon as it starts, no problem, I do that all the time. The amount of data used in the test can be adjusted somewhat, down to 100MB. It can run on any drive on the PC, at least the latest version can.
The OS Optimizer is a good feature, the FW update is good, SE, etc, what's not to like? Oh, it doesn't work on some platforms, chipsets, GPT format, or OS. GPT format is still in its infancy, and like AHCI, will take a while to become accepted, if ever.
The glitch in AS SSD with the Access Time that is sometimes seen with AS SSD is temporary in my experience. I have seen it, but I believe a reboot of the PC after the SSD is installed will cure that.