Just wanted to chime in here. I DIY as well and use 60%VG/20% distilled water/20% flavor (which are all VG/alcohol). I prefer the thin
juice, heavy VG mixes make my chest hurt and my lungs feel full. Juice this thin can be a problem with cartotanks though, mine are prone to flooding unless I'm very careful.
Another vote for Virgin Vapors, their stuff is amazing.