From reading the yelp reviews, I was expecting the food here to match that of Khao San Road's. To my disappointment, the food turned out to be just OK.
I ordered my favourite Khao Soi dish but was immediately let down by the mediocre taste. I mean it's not bad, but it's not great and there was something amiss that I can't quite put my finger on. Maybe I happened to have a bad batch, but I can say that it is not comparable to its equivalent at Khao San.
If you are on the fence about going to either Khao San Road or Sukho Thai, I would recommend, 100%, to go with Khao San Road if it is not too out of the way.