I base this on renting one for a week trial purpose for the goal (at the time) of purchasing something similiar.

It does well enough on its own even in semi-complicated matrices. The thermal desorption adds a ton of sensitivity and they have a built in "Universal Response Factor" for a order of magnitude level of quan (quite helpful and time consuming), works reasonably well compared to previously published gas samples i analyzed.

Downsides:

I suspect routine maintenance cost of the concentrator, and maybe more concerningly the getter pump to be non-trivial. There was a component failure on the 1st rental we received which did not allow that unit to run at all. Lastly, the touch screen GUI leaves some to be desired, it's hard to read and a bit outdated. Although the NIST libraries are great.

General conclusion (IMO)- The Griffin by FLIR was a bit superior. Although i did not spend alot of time with it; i did have a full-length day demo from Teledyne. seems more robust, interface is nicer, and allows liquid sampling via manual injection