OTher names for SRS are CyberKnife or GammaKnife. Try searching that.
www.brainmetsbc.org has good info about all that stuff too.
From what I've searched, the SRS is "quicker" than traditional surgery, but it takes longer to work since you are not actually removing the tumor. Sometimes you have to do it because you physically can't surgically remove the tumor. I also read alot about "tumor necrosis" with the SRS treatments.
Do you know where the tumor is located? My was a 1.5 cm tumor in the right parietal lobe, about 2 cm into the brain. They were able to surgical remove it and I haven't had any complications from that surgery (like vision, clumbsiness, cognitive function, memory). I take that back: I have problems with figuring math problems, like how much time I walked, how much tip to give, adding numbers.
Good luck with the treatment plan and stay with the fight.
You are worth it!!!!!