Not wanting to put a downer on things but I went to Concina Sunae a few months back and I thought it was pretty poor. The friend I was with ordered the pork and it was barely edible as it was so tough. I had vegetarian food though and it was pretty good but nothing special. The hosts are very friendly and provide very good service and there is a decent wine list. But as for the food, I don't understand why everyone was saying it was so good!
I think it depends what is being offered... last night there was a tom kai gai soup (thai soup of coconut milk base with chicken and mushrooms) which is a fave thai dish and their version was just how I like it. Then there was a perfect fresh spring roll with perfect peanut sauce. For the mains we ordered 1 each so got to try both... the pad thai was a bit moist but for BA, amazing. I've only had a better one at Phuket restaurant (which may be the only thing that Phuket gets right). My bf had the beef in Chang Mai curry sauce. I liked the sauce but not the beef as it was soft like in a stew, I didn't like the texture and for thai food I would have expected it to come in little chunks; it's not like anything I've ever had before so that was maybe the only slightly disappointing thing. Otherwise I'd give it a 95% vote. It could just depend on what's on offer as it changes week to week. But true, pretty expensive meal to be disappointed by!!