I don't like the mark one for it's 7" rear wheels, and the mark two for it's height adjuster that can jump and leave crop circles on the lawn.
Mark three with the first plastic height adjuster teeth is the one I'd only consider. They sold tonnes of that version, so I'm in with a chance and if it comes with it's own catcher, all the better to have a spare.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!