Using System Three has bee a nice sxperience for me as I haven't had any "clouding" or unexpected results...thier "Epoxy Book" (free) is an excellent primer on what to expect when using any epoxy system and clears up many FAQ's that are asked on this site. Using one system for all aspects is nice although if you are after speed and fast curing times one would need to consider adding a catalizing agent which could add unpredictablity to the project.