With SSD's getting comparatively cheaper, is there a size that is better than another? What I mean by this is, would a 240GB more reliable/stable/last longer than a 500GB drive, a 500GB more reliable/stable/last longer than a 750GB and so on. I understand the read/writes aspect and deterioration over time but, in this case is larger "better"? I don't really need the space because I have several HDD's for storage and backup but price per GB goes down as size goes up. I am looking at the Samsung 840 EVO and not sure how big to go and what the true sweet spot is.