Eastmall has 60 mg/mL unflavored PG, just got mine. I wanted VG, because I like adding some VG to liquids for more vapor and the slightly thicker liquids seem to work better in my M401. It's very nice for kicking up your liquids, in my whole two days experience. 36 wasn't working for me, but adding some of this has really made a difference the last few days! I also got some of the manual
batteries, and I'm a total fan now. What I love best about the 60 mg/mL liquid is if I start craving a cig I can spike a cart with this and that'll pretty much take care of that.