What's the BEST a/c recovery/charging station

I'm trying to find the BEST/FASTEST R134a recovery/charging station for our shop. We presently have an SPX Robinair Cooltech 34700z which is DEATHLY s-l-o-w at recovery! We had it inspected/serviced and were told nothing is wrong with it . . . If this is how Robinair is, I don't want another... Anyone have any recommendations?

The Robinair is a big POS,my father has one and he wrote this on it:Piece of junk.My father went through the same thing,they did not have him on record and SPX treats customers like crap.I cannot remember the brand name,it starts with a R,I cannot remember the brand name and they are out of Pennsylvania and it is the best one out there.Their cutomer service is great if you have a problem with it

The brand name is RTI if you want to know.

The more tools I buy and need, Im finding if it has OTC/SPX/Robinair or any affiliation with that company I avoid them anymore.

Here's a list of RTI Brand AC units (http://automotivetools.com/cgi-local/SoftCart.exe/searchlink.html?E+scstore++addtocart_page=/online-store/scstore/scpages/showcart.html&sort=SortOrder:na,Price:na&logic=And&SoftCartCategory=AC%20Machines%20RTI) for comparison shopping.
I've sold Robinair for a long time, and still do. The RTI is a better machine, and yes, you'll get better support.