The Luc V4 is a very reliable charger for xx650 cells and I had it in use for a very long time, but its bays are too short for 20700 cells imo. Although you can squeeze them in, it's just a pita and it may damage the wrap/insulator, if you're not very careful.
If 1A charging is fast enough for you, the Enova Gyrfalcon All-44 might be worth a look. I'm very happy with mine at least, and online reviews have been very positive as well.