I've been to this Sukho a couple of times and regularly order from them off UberEats. They are very consistent performers, whereas I've had mixed results with delivery from Pai. The most recent time I came was a Friday night and I made a reservation because we were a group of 8. I'm glad I did because the place was packed to the max with scores of people waiting for tables in the entryway.
Being so busy the place was really quite loud but our server did a good job. Our group included my two vegan parents, myself and another friend as vegetarians, one gluten free and one pregnant (who wanted to avoid MSG and raw items). Our server did a good job answering questions about what each could order and I had confidence that the vegan dishes I shared with my parents would turn out as such. And, for the record we did have two dining companions with us who had no special dietary requirements!!
My parents and I shared veganized green curry and pad thai. Both were excellent. I really enjoyed the green curry and my parents raved about the pad thai. It was actually a huge dish but they managed to chow down on a lot of it. In fact, I don't think there were any leftovers. I also tried a vegetarian spring roll as my friend ordered a bunch and couldn't finish them all.
Since this visit to Sukhothai I've started hitting them up on UberEats and also tried the veganized versions of the red curry and panang curry. Out of those two I think I preferred the red. Yellow curry, you are next on my list! Also, useful note that the green curry portion size is much bigger than the red or panang when it comes to delivery. Interesting. Note: the masaman curry can't be made vegan and the satay sauce for the fresh spring rolls has fish in it.
Anywho, Khao San Road has been closed for so long that I've forgotten what it tastes like and Pai is extremely hard to get into. At this point Sukhothai is the strongest contender for my go to Thai fix. That green curry got a flavour that won't quit and I'm going to keep coming back again and again.