I've used two different ones--the Electro-Groom (around the $500-600 mark), which I loved, and mine, a Vac 'n Blow Pro. The latter is decent, but doesn't have as much suction as I'd like.
Even so, it's nice to have for winter grooming when it's too cold to bathe. If you show in the winter and use it often, I recommend going with the more expensive Electro-Groom. It's definitely worth it. I've also heard of people using shop vacs, but I haven't tried that. Posted via Mobile Device