I know I'm going to get as many different answers are there are users, but hopefully, one type will come out on top.
Years ago, I always used Alumilite regular tan. Had no problems with it. I might get back into casting soon, and I want to know what you guys are using these days. I hear there are "better" choices out there. I need something simple, not too terribly toxic, and not where I have to buy it in huge amounts. (which is why I used Alumilite in the first place)
Oh... open end molds HS-II or HS-III, no vacuum or extra equipment. Nothing big; just handhelds: PADDs, hypos, other gadgets.