as it was said earlier look at your round parking how many times you have to move the van etc, i started off with a van system and a backpack, found it used to wind me up keep reeling in an out getting hose snagged up finding have to move van to many times, so i tried the trolley don't have to move motor i suppose its a chore change in drums i don't think about it i would rather change drums than keep reeling in hose an out move in the van a few hundred feet to next jobs and in some case on some estates i do i had to park the van on grass between rows of houses get in up the curbs didn't do the van much good i even had 100m of micro bore but still moved about to much, some rounds will suit a van some suit a trolley, my advise would be to buy a trolley use it mobile and use it to power a van system so that way you have the best of both worlds, but still get back pack there handy and some points even the trolley cant get too.