Just tested my new Wemos D1 Mini ESP. Wow very nice board.
Flashing is done at 921600 baud, that;s allmost as fast as a OTA update. Reset is handled by the board, so you don’t have to put the ESP in flash mode or hit a button.
Very simmilar to a NodeMCU I believe, just a little smaller. Biggest plus for the NodeMCU vs Wemos is you don’t have to solder. Plus for the Wemos is, you can stack boards on the chip, for example a DHT or SDcard reader board.