I’ve heard good things about the Lobo, they love it on Reddit as a good mid range device at a good price. It’s got more convection than conduction so it’ll tend toward more cerebral uplifting feelings than sedating sleepy ones though. You may still find yourself wanting for something a bit sleepier.
Also, don’t be put off the Solo 3 due to pocketability! When I was doing my initial research I heard a fair few times that it wasn’t very pocketable. So I was quite surprised when it arrived that it fit into the pocket of my standard chino trousers just fine, along with the stem and a little pot of weed. Takes up similar space to a tinymight with like 3-4 batteries, stem and pot of weed. Although with that setup you can split the mass by having batteries in one pocket and vape in the other which is useful.
Comparing either to a butane pen vape and small torch it’s no competition though. Can slip one of those into a small shirt pocket fairly discreetly. Some solid affordable options that pack a real punch in that space. The Dani fusion is my recommendation there.
But yeah, you may find the Solo fits in your pocket just fine. Might be worth getting the dimensions of the Solo 3 unit and making a little cardboard mockup of it to decide for yourself. I’ve done that before when trying to size up a vape. It’s a little over your budget but if you can scrape that extra money together it’s well worth it. Plenty of discount codes and price cuts with various retailers if you shop around. I got mine for closer to £200 than the £300 RRP.
I find it gives me a similar heavy feeling (although not identical as you’re missing some of the nastier stuff that contributes to the feeling) to smoking at higher temps, and as you have a bong you’ll have plenty of cooling! It’s very nice to put it on 210-220c after a long day and melt into the chair