I have one of each. LSG Mini (direct) and Humphrey's Pint (reverse).
Overall they are pretty similar in smoke profile and the ability to adjust the amount of smokiness which is mostly done by how you assemble the coals and chunks in the firebox.
There are some differences though.
1. Construction. Humphrey's is a tube frame with outer panels riveted in and the LSG is all welded. I prefer the LSG for build quality, but the Humphrey's is designed to allow the outer panels to be removed and "serviced" if needed
The LSG external water pan fill tube is a cool feature if you plan on running with water, but I run dry amd have never used it outside of a bread cooking experiment that did not go well.
My biggest complaint about the Humphrey's construction was the 2 part fire box /ash pan, but Humphrey's solved that issue with a one piece on new cookers.
2. Performance. They are both pretty consistent for temps across the grates and both seem to draw about the same. With my set up the Humphrey's runs all day at 250 without a temp controller. The LSG tends to run a bit hotter 265-275 also without a controller.
I find pork ribs turn out best on the Humphrey's but basically everything else I do on the LSG, especially the big meats. The top down heat of the Humphrey's seems to be the difference on ribs.
The biggest difference is the lack of consistency of smoke across the grates on the Humphrey's. The way I describe it is that the top rack of the Humphrey's is the single best place to cook across the 2 cookers, but the lower racks are impacted by how the racks above impact the air flow vs the LSG where it is very consistent across all 4 racks.
They are both awesome cookers and you will love either. Personally, if I were you, I'd pick the more local manufacturer, especially if it means you can go check them out, order in person, talk with the owners, learn a bit and most importantly save a ton of $ on shipping.
Let me know if you have any other questions.