I have been to good buffets in Las Vegas. The Bacchanal and the Wynn were both first-rate in all respects. After those experiences, Feast Buffet at Texas Station was a let down. There were good stations. The custom tacos and barbecue were both good. The fried fish was dried out and cold. Other items were somewhere in between. Additionally, the dessert options were rather limited, and while the bread pudding and soft serve were good, they couldn't compare to what I have seen elsewhere. If you are going for a decadent buffet experience, don't cut corners. Go for the real deal at one of the proven buffets.
If you just need an inexpensive buffet and you choose your items carefully, however, you can get a good meal from the Texas Station Feast Buffet.