The new Samsung 750 EVO is only a slightly different beast than its predecessor, the 850 EVO, but the differences are all to the good. The most salient is the speed at which it reads and writes large files. The 750 has a bit more cache, so you won’t work outside of its bounds as often—and when you do, sustained operations are a bit faster.
The icing on the cake? The 750 EVO is also less expensive than its 850 kin. The 500GB drive we tested is only $149 MSRP (and $139 on Amazon), though much of the drop has to do with the general lowering of NAND prices. The 750 EVO isn’t the cheapest SSD out there, but it was within about $15 of that distinction when this was written. And given that Samsung is very good at this SSD stuff, perhaps a slight premium is in order.