Clean environment. Good taste. Great price for AYCE Korean BBQ ($20/person dinner).
Gen is a franchise I first tried in CA. Atmosphere is consistent, but Vegas menu is different and appears catered more towards an American palate.
The (raw meat) portions are served smaller; let's call it a single person serving. No complaints about this approach (just a heads up). Quality of meat appears of "better than average" (for now, at least). Large selection of meats as well as a good selection of appetizers.
An "A" for effort on service, but they've plenty of room for improvement. Long periods of waiting for the next order, bringing the wrong things, and having to remind the server about the orders. Staff does not mind their P's & Q's, which isn't a deal breaker, but leaves a lasting impression when a tray of raw meat darts past your face without so much as an "excuse me".
Overall, I recommend Gen to anyone who enjoys Korean BBQ. Not your standard creature comforts, but a good meal nonetheless.