Best way to describe them is like a high maintenance woman, there's very few times you can get it out the case it work fine. I own one and I regularly have to change the dwell according to the weather.
However in the past year i've not had to change an o-ring (well I had to change the ASA oring because it was leaking a small amount but nothing major) and for the price I believe it shoots just as smooth and quiet as the Geo3's, I wouldn't think twice about taking it onto and tourney or scenario field.
There still is some UK support, most tech's can fix any problems and if they can't do it I'm pretty sure the guys over at the factory in Nuneaton can do it, it wasn't shut down they just machine different stuff now.
How much was you looking to pay for one?