Base model 15.
Charged to 98% last night, unplugged it and turned it off. Woke up at 7:30am, powered on. It's now almost 5:30 and I'm at 66%. I've used it quite a bit today too. Pretty impressed. If the regular 15 is this good, the Plus users must be over the moon. I just got 10 hours usage on 33%. I could almost get two full days out of this thing if I powered off at night.
Don't want to look at cycles though. It's way too early in the game for me to even worry about that kinda stuff.