See, I've never even managed to get a Prophecy or a Z2 to even feed paint without screwing something up. The LTD Prophecy I had for around 6 months. In that time, it never lasted a match without failing or alternatively didn't work at all. Plus, it was the most fiddly thing going. The Z2, whilst slightly improved, is still fiddly as hell and has a lot of problems feeding. Battery life is also horrific. Looks good though.
Thing is - the Z2 should be an excellent loader. It just needs more work doing to the shell system.