AC charging unit

I am looking to buy a new AC charging unit for fleet use on my vehicles. Can anyone recommend a good unit and where to purchase? I did get a price of the Snap on man but everyone says there to much money. Any thoughts would be appreciated. No I don't know any thing about them. Yes I do have mechanics that are certified to use.

Thanks

Craigs List.

Mine is Master Cool. I'm happy with it. I got it for about half price from AutoZone. I think it was one of their rentals.
Don't buy an off shore cheapo like those from Harbor Freight. They use metric threads so you'll have a hell of a time buying adapters or hoses, should you need them.