The Lloyd loader has a felt light-trap, which can introduce scratches if it's dirty. I'm not familiar with the Bobinquick loader, I don't know what it uses.
The Watson loader Fotch referred to uses a mechanical light trap, and nothing touches the film when you are spooling it into the cassette.
The M605 only does 35 and 6x6, however, it is a nice enlarger if you're working with those formats. It is compact, and easy to take down/set up if you don't have a permanent space. I do everyting on a 4x5 but I keep my M605 in the closet "just in case".