Even people with mild PG allergies find that a mix is tolerable. Cartos will work fine with 70pg/30vg and some use a 50/50 mix without problems. I vape 100% PG, but suspect that I'd be better off with a mix. I sometimes get that funny feeling in my chest like I'm not getting quite enough oxygen at times. I feel the need to take a deep breath from time to time. That wasn't an issue until right after I started vaping at 4.2v on a 3 ohm Boge. At 3.4v on the eGo, I didn't notice anything. When I borrow my brother in law's little finger clip on oxygen tester, I'm always at 95% or better and it goes to 99 and 100 if I take a deep breath before clipping it on.
We all need to try different mixes and find out what's best for us.
We all need to try different mixes and find out what's best for us.