Probably a total noob question, but why are there different rear shock setups? I presume some of it has to do with patent issues, but that aside are their advantages to some over others for certain riding styles/conditions? Even within a manufacturer there are changes as one goes from the "higher end" bikes to the "lower end". Sorry if this is a lame question, if it should be posted in the suspension forum, or if I should not even worry about it. I'm still in the research phase of my purchase (as if that wasn't obvious) so thought I would ask. Thanks.