Has anyone that has an aftermarket extended warranty used it yet? My concern is that it is going to be a pain trying to find a shop that is willing to do the work under these plans for various reasons they may have. Also, is there a lot of hassle to go through when trying to claim something under these warranties? I'm sure they say there is no problem at all when you call them before you sign up, but what if you actually made a claim? I would like to know because I am quickly approaching 50K mi. and am debating getting an extended warranty...