For moving around room on flat surface,I bought this one last year for $160 +freight.(Ref Pict) After one modification (Some blocks of wood) to get a higher lift,it has worked well. I think the one mentioned on this post would work well transporting longer distances and over uneven terrain. Probably depends on your budget on what lift trolleys you get. Just noticed this one on ebay http://www.ebay.com.au/itm/ATV-MOTORCYCLE-LIFTER-LIFT-QUAD-BIKES-EASILY-/290563255173?pt=AU_Motorcycle_Parts_Accessories&hash=item43a6eb6b85 much the same type as I have.

This one looks good value for money.
To get the extra lift (and more stability), you could also add some bigger rubber wheels.