I just bought this nailer and it an amazing piece of kit. I have just been playing with it, after Christmas I will put it into daily use. I have found nothing wrong so far with the nailer, it acts and responds just like the gas fired nailers, hard wood, soft wood no problems so far. But, people will know you are using this nailer as seeing the motor is quite load as it revs up to speed prior to landing a nail.
The Only problem was at Lowes. The nailer is new to the market and I'm one of the few in the Ottawa area to have one. This seems to have take Lowes by surprise, they didn't know what nails where compatible with this nailer. It took an hour for lowes to find out what nails spec was compatible.
I had the metric specs,but the boxes of nails are all in imperial not helpful.