To raid or not to raid

Ok ive heard people saying raid setup with ssds are great and tons of speed.  

Others say not somuch. (wich i dont understand because a revo drive technically is setup with raid) 

I have 2 ocz agility 3 ssd 60 g i wanted to run raid 0.. Should i or no? 

Personally i would not bother without a dedicated raid card.

Can you explain please? 

the performance gain is only in benchmarks, i don't see any performance gain, i thought it was going to be insane, but i get an extra second of load or so in programs.  Rendering on 3dsmax and maya speeds are hardly noticeable, installations don't change much, it's pointless unless you want to turn ur ssd into 128gb, that's really the only reason i see it for.