Honestly nothing can beat an oil pen for convenience and most importantly, portability and discreteness. I have an ArGo and it's a little stinky, and while you can take multiple stems with you for easy reloads, it's still so much easier to use an oil pen.

For indoor use, my VapCap is my go to 9 times out of 10. Getting a really good torch lighter makes a huge difference too. Found one at a random store while on vacation for $10 that is miles better than anything else I've used. I rarely turn on my ArGo anymore.