The build quality is quite good. The only complaint I have on the build quality is that the "train brake" handle is slightly askew instead of perfectly straight. I suspect it's an uncommon defect and has no effect on gameplay or function.I'm not a fan of having to install stickers because usually the stickers are much smaller than the space for which they were designed. The RailDriver, however, has sized the stickers appropriately and the application of them is easy with the indentations on the hardware which they fit into.I am using the RailDriver with Railworks Train Simulator 2013. There are locomotives that don't work completely. For example, one of the Amtrak loco's the train brake doesn't work. The Amtrak train on the NEC route doesn't work much at all with the RailDriver. I wouldn't consider these deficiencies as a comment on RailDriver quality but on the lack of Railworks Train Sim programming. RailDriver has made available to developers an SDK which they can use to fully integrate RailDriver functionality throughout the game which Railworks so far hasn't done. There are locos that do work completely which seem to be the default ones.Running a train with the RailDriver is much more immersive...and fun! I always had trouble controlling speed especially coming downhill requiring variable dynamic braking settings. With the RailDriver it is simple to control speed in examples like that and many others. I like being able to do an entire scenario without having to touch the keyboard and only using the mouse to manipulate the 2D map and occasionally the camera which seems to be easier than using the RailDriver camera panning buttons.Kudos to P.I. Engineering for not only creating this great piece of hardware for train simulators but also for doing it so well. Delivery was very fast. The RailDriver arrived 2 days after ordering - 6 days EARLIER than Amazon's estimated delivery date.UPDATE: Since the review I wrote above, I have changed to the Run8 train simulator - [...] - which was designed from the ground up for using the RailDriver. Everything works fantastic, none of the problems that I experienced when using the Railworks Train Simulator as described above.