This always seems to be the SSD which gets recommend recently but having now just got one it seems highly overrated to me.
The benchmarks tend to look good but after testing it seems to me very run of the mill and over priced. However I have only tested it so far in an atom machine which is sata II.
The problem is that the benchmarks tend to show that it hits 50MB/s for 4k reads and in some cases I have seen 80MB/s which is amazingly quick. That however is with rapid mode on, which from what i have breifly read is just a 1GB Ram cache and a not very good one at that. As such of course it looks good in benchmarks as it has just loaded the test files into Ram. If you do a 4GB test you see that the cache is pulling it up as it only hits 27MB/s then. No doubt on a weak CPU system it pulls system performance down, plus its eating up the RAM.
With rapid mode off (so its actual read rate) it hits only 22MB/s which is gash and bottom of the range nowadays it seems.
If you have a decent machine I would appreicate it if you could run the crystaldiskmark 4k test with rapid mode on and off with 1GB and 4GB tests (1 or 2 runs would be good enough)
In comparison the budget Sandisk Ultra Plus 256GB with the marvell controller seems a better performer. It has the simulated SLC write area like the EVO but has MLC flash, its cheaper and it seems has a 4k read of about 37MB/s, assuming its not using some similar benchmarking shenanigans. So if you have one of those I would be interested to see a 4GB 4k test.