Went in to Park Mazda in Akron Thursday to get my oil changed. Should be a good oil sample, 5W20 Exxon Superlfo with Lube Control in. Goes out Monday morning. Anyway, as I was checking out, the clerk mentioned that my rear springs were cracked, but that I was lucky in that they cracked at the bottom, otherwise I could have had a punctured tire. They quoted it as a three hour job, but I couldn't wait for the parts quote since I needed to get back to work. I'll call around for quotes to my favorite three shops, so I'm not asking about prices. My question is, any brands to avoid or steer towards on this? Is it worth getting factory brand springs?