I've settled on 70pg/30vg, it gives me great great flavour, throat hit, vapor and carto life. Also too much VG and my lungs really start to feel heavy and I start wheezing like I'm back on the smokes.
This is the exact same road I traveled down.When I started vaping I got a throat congestion from it. I wanted to try several different ratios to nail down my sweet spot and relieve the congestion. I bought two bottles of juice. A 100% vg and 100% pg, both in the same flavor. I mixed them together in 5 smaller bottles in 5 different ratios. They ranged from 100pg-70/30-50/50-30/70-100%vg. After I had vaped them all I decided the vg was giving me the throat congestion. I loved the vg clouds but I didn't love how it felt like breathing in a hot steamy shower. In the beginning vapor was important to me, I wanted as much as possible. Then I realized that was kind of silly IMO. Even with 100%pg I was still getting more "smoke" than analogs gave me. Now throat hit is my primary concern, then flavor, then Vapor. I settled on 70pg/30vg. It fits my needs and works great in all my devices.