Pros: VERY fast; writes as fast, if not faster, than reads; 5 year warranty.
Cons: Depending on vendor, usually more expensive than equivalent performing SSD's.
Personally using Bench32 from ATTO and AS SDD Benchmark tools, Intel's claim of read AND write speeds of over 500 MB's are easily demonstrated. According to an average of about 10 benchmark reviews from various familiar sources, this places Intel's 520 series in the elite top 5 of SSD performances. This 180 GB offering is as good as any SSD under 200 GB. It is lighting fast, shut's down my W7 system in 7 seconds, and is between 16 and 20 seconds from BIOS handover to fully operational and internet ready.
It is still unfortunate tha Intel insists on maintaining their reputation as the most expensive computer parts manufacturer in the computer inustry, but this time it's not THAT much more than an equivalent OCZ, Samsung, or other favorite. As of this date in May, 2012, you can purchase this SSD for just over 30 USD more than the competitors. That's worth the extra two years on the warranty. At least Intel is putting its money where they're mouth is. I, for one, am happy to be their mouth-piece for this product. This is the real thing. 180 GB for $300 or less and you get 500 MB/s for five years. Guaranteed. Works for me.