I use vg based nicotine from nicotine giant and have had great luck with it, I still get a decent throat hit and yet it doesn't mess with my stomach at all. I didn't notice any difference in flavor between PG and VG based nicotine either I forgot to select vg with my first order and the PG based nic did the job until my vg base came in and it didn't taste different in my recipes when I switched to the VG base nic. However, you do have to consider that each persons tastebuds are different so what might seem harsh to me might be very smooth to another and vice versa.