I got one of those Mk4 ones and it is great. Did a conversion on mine though which improved it. Replace the foot straps with loops of hose pipe just big enough to get your feet through and tie them on with bungee cord through the metal mesh so they stand upright. It makes life so much easier - especially in the dark. Be careful with tree choice too as smooth ones are dangerous! I also tried climbing a telegraph pole which is possibly one of the stupidist things I have ever done! I got about 12' up and both seat and footrest slipped! I was ironically saved as the footrest dug into a screw securing the "Danger do not climb" sign!!