[Nut-upsuser] thoughts on tripp lite Smart Online UPSs?

[Lee Damon]

We're looking at replacing some old APC SmartUPS 5000s with something 
that has USB so NUT can more easily talk with it (and yes, I've tried 
USB-RS232 adapters and every one I tried started kicking out errors 
within a few hours).

One of the bids we have is for a "Tripp Lite UPS Smart Online 5000VA 
4500W Rackmount 5kVA 200V/240V" as the potential replacement unit. I 
have no experience with Tripp Lite UPSs and the reviews I've found 
online are scant and fairly mixed so I thought I'd ask here...

Does anyone on this list have experience with these UPSs? Any thoughts? 
Would you buy it again? Does it work well with NUT?

thanks,
nomad

F.T.R. the full description is "Tripp Lite UPS Smart Online 5000VA 4500W 
Rackmount 5kVA 200V/240V USB DB9 4URM ENERGY STAR V2.0 - UPS - AC 
200/208/220/230/240 V - 4.5 kW - 5000 VA - RS-232, USB - output 
connectors: 4 - 4U - attractive black"

I'm sure the "attractive black" part is critical.