Most of the good operators down here use garnet,,a lot cleaner,does not rust,can be re used. I use it myself in little jobs on my own cars.I have seen the problems with soda blasting,as it seems to leach out of seams and joints for some time,and have known a few people who have had to strip their cars again a year or two down the track,as they have had problems with the paint job..Dont think I would go there..I still use the old fashioned paint stripper method..