We are currently demoing one, and I had the chance to use it for 2 shifts. I didn't have any big runs, but the few patients I monitored with it, I really liked it.
It's very intuitive to use, and being able to monitor in 12-lead is really nice. I didn't have anyone that needed capnography, so I didn't get to try that out, either.
I don't really like the location of the printer, but apparently it is there due to military specs. The bag that it had on it really sucked, but the rep said there are other styles available. He said no one likes the bag style that we got, but the others we all on back order. Apparently there is a backpack style one that everyone I work with is really interested in.
One of our crews did have a cardiac arrest they got to use it on,and they really liked all the CPR feed back on it. They said it worked really well.
Overall, I haven't heard anyone say they don't like it, that have had a chance to try it out.