I've done a little research how are prices of SSD drives in my area (middle Europe). I don't know which SSD performs better, I'd really like to know how they're ordered by performance, if anyone knows I'll be doing mostly gaming, nothing fancy with program or video/audio editing.
Also, can somebody tell me which SSD is the best value for money?
All my choices are around 120GB, becouse for my budget (around 100€) that is the best I can get + windows, programs and games will all fit in there, that's the most important thing for me.
You will not notice the difference between any of those drives in normal use.
I use many drives, as I always test them for a while after builds before delivery, and there is almost no difference between an older Vertex 2 and RAIDed pair of Samsung 840 Pro's as far as running normal applications and typical daily use. The only time that differences really become apparent is doing large sequential writes with apps like video editing on large files.
Take a look at LuckyJohnny's SSD database HERE for information on the specific NAND types in each drive.
I would go with the Crucial m4 too, not the fastest SSD out there, but they are very reliable. If you are looking for speed, the Samsung 840Pro is the way to go and mine have proven to be reliable so far.