Curry Zen does their spice and katsu very well. As others have said, level 5 is pretty good (for me) - the spicyness builds as you eat your meal. The cool, sweet pickles make a real nice complement with every bite! Value is okay - I would have expected a bit better value in Vegas Chinatown. The self-serve pickles (and other curry "add-ins") are a nice touch. Solid place that is definitely worth a visit and we will return.