I'd love to see real data on SSD lifetimes. Here's mine:
2x OCZ Summit 64GB (circa 2009) - See note below for issues I had.
2x Intel X25M G2 160GB - Installed in March 2010 - Both have worked flawlessly and both show 99% of drive life available by SMART E8 entry. One is my main desktop and one my main laptop. Never had an issue with either. Both have estimated EOL of November 2020 and Dec 2021 by SSDLife.
1x Intel X25M G2 120GB - Installed in April 2010 - 99% drive life availabe by SMART. It is the boot drive for Server 2008 R2 and is only a file server. Not much to do there so I'm expecting a very very long life. Estimated EOL Nov 2027 by SSDLife.
1x Crucial C300 128GB - Installed Nov 2010(was boot drive for 2 months by now used for games only) - 86% of life remaining and EOL is Nov 2020.
I don't go too far out of my way to minimize writes. I always disable hibernation and pagefile in Windows for all of my machines. I never use hibernation and my RAM is always 16GB or more. I use the drive like I normally would without regard for the "limited lifespan". If I was going to do something like copy a blu-ray or reencode a video I used to do it using only local drives and then copy it to the server. Now I just do it over the network shares. Otherwise I use my drive just like I always would. Run BOINC on it, etc.
I've gotten a few friends into Intel SSDs, and none of us have had any kind of failure at all ... yet. Everyone's drives are listed as having EOL of 2020 or later. If these drives REALLY do last that long, I expect we'll be throwing them away before 2020 because a 128GB drive will be too small for the OS and a few common programs(Office, etc). I used to tell people to go big because they can take the drive from machine to machine over the next 10 years. It really just doesn't matter though, they're dropping in price so fast you should just buy what you will want for the computer you are using.
One friend bought an OCZ drive because it was really cheap at the time after rebates. He has had to RMA it 4 times in less than 12 months. He's the only person I know personally that hasn't bought Intel, and he is the only one to have any problems.
Personally, I swear by Intels. My experience has been phenomenal with them. I have yet to see an SSD failure personally, and it seems that lots of people have heard stories of Intel drives failing, but I haven't met anyone personally. My experience is that Intel SSDs, reliability-wise, are far superior to rotating rust. I am a little concerned now that Intel is getting away from using their in-house controller and going to Sandforce. After seeing what OCZ drives do and the fact that they use Sandforce I'm a little hesitant to expect a long lifespan from them.
I'm wondering if Intel switched to the cheaper Sandforce despite the lower reliability only because they want to be competitive for the price. Who REALLY buys an SSD expecting a 2020 EOL? Allegedly the newer Intels will have a SMART failure message when you have 1% of the drive left. Intel says that for most users that should be about 2 months of regular use since 1% is not really 1/100th of the drive life remaining. If this is true and I can expect to own the drive for 3-5 years and the drive will give me a SMART error when it is nearing EOL, what more could you ask for? That's nirvana for me!
I will say this. Putting SSDs in every computer I own makes them MUCH more responsive. I've always upgraded every time a new Intel CPU design came out. Right now my desktop is using an Intel i7-920! That's circa Nov 2008. I've NEVER had a computer more than 2 years. Thanks to SSDs the machine still works great 4 years later. I'm thinking of upgrading with the next Intel CPU generation only because the machine is getting old and as a geek I need to be able to justify my geekiness. It's hard to call myself a geek if everyone else is buying $500 Dell machines with more power than my machines. A friend bought a hybrid hard drive. There's just no comparison when it comes to booting up and actually USING the machine.. not looking at benchmarks but actually using it.
* - My Summit drives are used as boot drives for my HTPCs. Both had sudden BSODs while using them. Hit the reset button on the computers and all I would get was "No Operating System Found". I tried to recover from backups, but they wouldn't work(write error). Then tried reinstalling Windows 7. It would give a write error too. I decided to try a secure erase using a Parted Magic disk. After the secure erase the drives have worked perfectly. Ran some read and write tests and could never find any problems. Finally I recovered from backups with no problems. Drives have been working fine for about a year now.