50 pixels per strip, 150 channels. If only 17 are showing up then it sounds like a config issue with xLights or the PiHat. One place or the other you have it thinking you only have 17 pixels on that connection. IMO dollar for dollar the Falcon is the better controller, way more options than anything else. Bought a F48 this year because I like the idea of being able to run 250 feet from the controller to a receiver where I may need the lights to be (receivers are cheaper to build than adding yet another controller). As far as software S5 wasn't an option when I made the change and I was adding something that LOR didn't support (P10 (think jumbotron)) at the time. My wife wanted video in the show but we lived in a college town so putting a projector in the yard was NOT an option. Haven't fully evaluated S5 but xLights to me is written the way I like to think ("do a color fade and strobe on model/prop A" as opposed to "color fade light strand a thru z then twinkle"). Everything is at the model/prop level instead of strand, ten times easier than visualizer.