I have an OCZ Vertex 3 60 GB (for half a year now)
I am using it for Windows and all my programs as well as StarCraft 2 (all my other games are on a regular HDD, although I wish I had a 240 GB SSD for all my Games).
I saved a lot of space by using a 8 GB RAM-Disk (gt 16 GB total) and limiting pagefile on the SSD to 100mb. Also disabled all kinds of copies (only ever keep the latest backup file and so on), so even with all programs that I use + SC2 + Windows I still have 15 GB of 55 GB free.
But my next thing to upgrade will either be a 240GB SSD for my games (as indicated above) or a ~120GB SSD for my laptop for university. I hate how slow that thing boots even though it has 8 GB of RAM, yet in comparison it seems to take forever for everything
--> I guess that is a good example of "First World Problems"