Red Ginseng is very well worth the money you pay for. The quality is very good and the service is outstanding. I highly recommend the Golden Philadelphia roll (the typical Philadelphia roll but it gets lightly fried). Among the other notable dishes I've had include the Popcorn Lobster and Spider Roll. The salmon roll was also very yummy. Be sure to save some room for dessert, the green tea moochi is a great finishing touch to the end of the meal. The presentation is always very appealing and it really makes the food and experience.
The appetizers are good. I had the vegetable tempura which is freshly fried and had just enough batter- not too much or too little.
The service is outstanding. It is a very organized ordering system, you get the menu and a ordering sheet. Order what you want and it comes very quickly. You can tell that it is a family run establishment by the pride they have serving you. It can get a little hectic when they do get busy, but it is definitely worth a bit of wait for the food. I personally like sitting at the bar area of the restaurant because the chef will talk to you and make recommendations based on what you order. Remember, it is AYCE, so maybe a little time to relax between dishes will work to your favor.
I am originally from Northern New Jersey, right across the river from Manhattan. I can honestly say that Red Ginseng beats most, if not all, the sushi places I've been too. The quality and the service you get here beats many places that you might pay double or triple for on or around the Strip and other cities. I highly recommend a visit here.