whats the best Liner vac for a pool profesional

[h2o ski]

I bought a liner vac last year that was orange in color. A couple of guys that work for me said they had used them and liked the liner specific vac better than large shop vacs. It was a piece of junk; it didnt suck. pun intended. Whats a good one?

 

[carlscan26]

It seems like a lot of the install threads show your common wet/dry shop vacs being used. My installer used one and it worked just fine.