If you're up for venturing to the east side....I've been to Elements PDX Vape Shop at 33rd and Hawthorn and Escape Vapor Lounge at 82nd and Tillamook. Both delightful -- mods (I'm not mechanically inclined, I just like to look at the pretties, not qualified to comment on how great the selection is), juice bars - multiple brands, super knowledgeable friendly staff.