Best "new" hammer on the market, hands down, I have used one everyday for the last 10 years and its a good as the day I installed it. I have never had an issue with it and Brian Russel is just great. I've run and owned almost every other kind of hammer out there and other than someone dropping off a nazel 3b at your shop for free, (Carefull, probably needs a ton of work) you really cant do any better.
I recently bought a "utility" hammer (runs on a separate compressor)from a US manufacturer for a big job we had. I needed to land another hammer on the shop floor pronto and these guys have them in stock and ready to ship. This particular machine had good reviews, there are a lot of them out there and I figured, "what the heck, I'll buy one and give it a go too".
I ran the job, then immediately sold this other hammer and bought myself another Sahinler. The utility hammer wasn't a bad hammer, I think its probably just fine for a lot of folks but there was just no comparison between the two....
my two cents...