Best answer: YES YES YES! I have this in my mid 2012 MBP typing this answer right now. It works awesome. I definitely don't regret it at all! I'll add a photo from the black magic disk speed test app available on the mac app store. It's for the SSD currently in my comp and after about 3 months of normal usage.
Boot time is 10s or less. Shuts off almost instantly. Apps are open before they have a chance to bounce on the dock. That's including things like photoshop, word, etc. All work incredibly fast.
My best advice is to get this and use carbon copy cloner to clone your current HD (or do a fresh install...its up to you)... search google for a mac app called "Trim Enabler" and get the premium version. This will allow you to turn off the sudden shock sensor since you don't have a spin drive anymore as well as some other nifty features.
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