brake cylinders

[gr8hunter1 at comcast.net (Jacob Hawes)]

Going back to my brakes and finally getting the stupid things pulled 
appart (skipping the part where it says to press the brake peddle to 
see...) I found that the cylinder was leaking. One of the little pistons 
wanted to stick out, and when I pressed it in a little it leaked and 
wanted to push back out. The book says that if they leak they need to be 
replaced so here I am asking more questions.

Looking online I found $9 cylinders, ~$15 cylinders, and $30+ cylinders. 
Is there that much of a difference?  The Raybestos versions ($9 and $18 
each) only have a 3 month warranty when all the others (Beck/Arnley, Tru 
Torque, and Bendix) have a 1 year warranty. Aside from that I have no 
idea if one brand is any better than the other.

-- 
	--Jacob Hawes
Cars:
	'80 Scirocco mk1 "Tuyer"
Sharp pointy things:
	18" HI Kobra "pillow knife"
	17.5" HI Ang Khola Villager "camp axe"
	~48" Custom XVII longsword. unnamed
My Photobucket:
http://smg.photobucket.com/albums/v310/yoippari/