For specific comparisons you might want to ask the moutain bike forum. Personally, I am not a mountain bike guy, I don't know much about suspensions or disk breaks. But I bet they will tell you what I am telling you: they are all pretty much the same in quality, buy what you like.
Or, look at it this way:
here is a the kona cinder:
http://www.konaworld.com/08_cindercone_w.htm
here is the kona blast which is the next model down from the cinder:
http://www.konaworld.com/08_blast_w.htm
Its $150 cheaper. What does the cinder give you to justify the extra $150?