Summary: I was skeptical. I kept reading and hearing about SSD failures. This one is a "solid" model. Heh.
Pros: Been using this for 9 months. I build a primary desktop every 2 to 3 years. This was my first time to build with an SSD drive. This one was highly rated, so I took the gamble. Fast boots and quick Windows 8 response makes me a happy man.
Cons: cost, but I'm sure SSD drives will drop over the next few years
Summary: I have heard that some people are having issues after a firmware update using the Samsung Magician software. I have not installed this software, nor have I ever done any firmware updates. I'm not sure if this applies to my 256GB drive or just the 1TB drive I've seen comments on.
Pros: Fast write, fast read. Boot speed with Win7 only: 13 sec. Boot speed with Win7, SWTOR, Office, ACAD: 16sec. I have been writing/deleting a lot more than I thought I would and the drive is still going strong.
Summary: If you're in the market for a new SSD to replace or supplement your spinning disk, there's no reason not to get this drive. If you can wait, try to get it on sale.
Pros: I picked this up on sale as a replacement to the 15K HDD in a gaming desktop. After nearly 5 months it has been solid and performs great. ATTO's Disk Benchmark returns high I/O results that blow the 15K away; as you would probably expect. I kept the 15K around as overflow if I ever need it.
Summary: Well, if you have one of these--keep them. If you don't,.. go for Samsung 850 series. 850 series offer similar specs but have a tighter and cleaner performance line when measured, and a new V-NAND 3D stacking technology to boot.
Pros: Have 2 of these. They are great. Super fast.
Cons: Since 850 series came out the price jumped on these beauties +200 dollars. 850 series are better than 840 and cheaper (currently) but 840 were THE SSD to go to for max speed in it's day (just last year actually.) Things go fast in this industry.
Cons: failed after about 1.5 years Samsung has no contact info available on line for warranty claims current (3.17.15) contact info for Samsung for SSD warranty claims: 800.726.7864 - press 4, then 5, then 1 other web info is www.samsung.com/support