I have a compression tester but I need a leak down tester for more info. There seems to be a range: cheap Harbor Freight (which I usually avoid like the plague) up to fairly expensive SnapOn (which would be my preference if I hadn’t already killed my budget). There are several that I don’t recognize the name but could be good. Can anyone make a recommendation? Would be nice to be under $100 but I don’t want crap that isn’t reliable so if it needs to be over that, so be it.