I love Velvet Cloud Vapor. I've tried almost all of their juices and have only been disappointed with one.
I got a couple of VG based juices from Mt Baker a while back, and they were OK.
I like Roar a lot, but I think their juice has PG if you get your juice mentholated. I kept having reactions while vaping their juice, even with 100% VG base, so I looked up their menthol drops and it's apparently menthol and PG
Alice in Vapeland has made my juices with VG and so far I haven't had any reaction, so I'm assuming if there is PG in the flavoring, it's a miniscule amount.
Virgin Vapors is OK. I've only tried 7 flavors, of which I loved two and hated two. The other three are OK, but not amazing.
I think I'm in the minority here, but I don't really like the Johnson Creek Red Oak line.
Heather's Heavenly Vapes, I'm on the fence about. I've only tried three flavors, but they were good enough to make me want to try more, but not amazing enough for me to rush to place that second order.
I think I'll be trying Highbrow next because I've heard really good things about them. I also wish there were more VG friendly vendors out there. It can be a real pain trying to find VG juice you love.