The reason why I asked this is that I personally treat it as 18-19 NT, but many players at BBO seam be of the opinion that one should bid 3NT with that type of hand. I can't find any sourse of SAYC online that explain this part of the bidding. Please point me to a good online source of (standard full) SAYC if you can. Would you treat 1M-1NT; 2NT any different. I wouldn't!