wesco has the best if you don't need a stair climber and just need to move machines around.
its available at grainger.
red with kickback wheels and a wratchet style strap. the seat belt straps or the straps you "pull" for tightness are not good
bought mine for $350 8 years ago or so from there.
its the best , trust me. ive used virtually everything for moving pins, vids, redemption, etc.