Even though I don't have deep understanding on the subject, I use Samsung SSD 830 as a dedicated Capture HD for tether shooting with 2008 MacPro.
I enabled "Trim" through changing the related code of OS X_10.6.8.http://www.hardmac.com/news/2011/03/27/the-universal-solution-to-activate-trim
I did change the file manually and don't use the "Trim Enabler".
I didn't have any problem for about 6 months with this setup. It's not a clean way, but I think it works. For some reasons, I think the manual code change is a better way to go than the automatic way, "Trim Enabler".
I also use OWC Extrem Pro SSDs, 100GB, as a system HD and a storage HD, which are not Trim enabled. I followed the advice of OWC.
I didn't have any problem for the system SSD. I only use about 45 GB in the system SSD.
When I use the other SSD, at the near full capacity for a while, using around 80 GB or over in 100 GB capacity, the SSD showed a serious problem. The writing speed was reduced from around 230MB/s to around 20 MB/s. The read speed was normal as around 240 MB/s. I removed files from the SSD. After about one day, the normal writing speed came back for itself.
Even though I'm not so sure about the exact cause of the problem, I'm trying to use about 50% capacity when using OWC SSDs now. Not over 70%.
I'm not sure this issue is related with only OWC SSD or not...
I sent the SSD back to OWC and am waiting for a replacement since I can't use the SSD for any serious job.
Even though I have very limited experience and knowledge on this subject, for now I like Samsung 830 SSD with Trim enabled through the code change of OS X.
Also I'm dealing with Raw files which are compressed files. I heard that Samsung SSD is good for dealing with compressed files.
And trying to use less than about 70 % of total capacity of a SSD.