Perhaps Catmerc should research the spec lifespan in TBW for the Sandisk Plus he has, and then use an SSD utility to discover how many TB he's written to it so far. It would probably be better to follow Elixer's suggestion, and swap it out for a 500 GB unit. Or? A TB unit if he wants to spend the money. But a half TB would be totally and comfortably adequate if he's going to use a second drive for data even/especially for many large files.
I use Samsung, Crucial and ADATA. I have a few small 60GB Patriots -- one still in a specialized use, another waiting in the wings. I'm not displeased in any way with the ADATA SP550 in my Sandy 2700K as boot-system disk.
For a long time I limited my purchases to 500GB units, and I didn't fiddle with HDDs of more capacity than 1TB. I know what I need; I know how much data I'll end up storing on a particular system. I have gobs of space on my 8TB server disk-pool. There isn't a system in the house that has a disk filled to greater than 50% capacity. Just recently, I was accessing my Bro's system with Remote Desktop for maintenance, and discovered messages from the system saying his SSD-boot was getting near full to its capacity. I couldn't believe it. it was a 250GB Crucial MX100. I finally got upstairs and did a little poking around. He had music files on the server -- about 130GB-worth, and he wanted "easy access" so he simply copied the entire folder to his desktop. He had a 500GB second drive on his system, but didn't know what he was doing. I created a shortcut on his desktop to the server folder after explaining it all to him.