I haven't tried any of the conversions but I do run a number of PAWs, DCs, Irvine Mills, and MP Jet.

If you want a real 'set and forget' experience and you like small models, try and get hold of one of the MP Jet Classic .040 side-ports. These really are one flick starters after break-in. I have one on a 1/2a Powerhouse (42 inch) which it pulls up to a couple hundred feet in the minute or so engine run that the attached tank (2cc) gives. Much joy