A decision to go to Woo Che is almost always based off price, not quality. Woo Chee is probably the most affordable/cheapest of the AYCE KBBQ offerings here in vegas. At about $13 for AYCE (after 11PM) this place is a great value. But as many of fellow yelpers have noted, this value does cost a diner in terms of quality.
I am not saying that the quality food here is bad.. but it could be alot better. After 11pm they essentially stop replenishing the food in the buffet (except for the meat) and diners are free to get whatever is left. When I got there are around midnight last week, I noticed that all of the salad, and much of banchan offerings were depleted.
The meat itself is not bad but really impressive either. The spicy chicken is great and not offered at the other KBBQ places, and the jalapeno soy sauce is addition. I wasn't too impressed with their cuts for the bulgogi and beef as it seemed like it was mostly fat on it.
The interior is like most KBBQ places, minimalistic, but this place definitely has a cafeteria like feel to it. Woo Che is a great value, but there is a sacrifice on quality. Sura down the street offers a much larger variety of food in the same buffet style set-up but is around $22 a pop.