I can't remember what make my blaster is, but it sounds very much like your ACE RTBComp. It may will be the same. I also use J-Blast as it's what they recommended when I bought it. It's the big red one they always used to advertise in Practical Classics (they may still do)
It's one of those things that you can't really imagine just how useful it is until you own it. I really can't be arsed with rust removal and it makes it so much quicker. All I need is a good method for stopping the grit getting EVERYWHERE....
