
Segway
Ninebot Max G3
Durable hill-climber; heavy with limited range.

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I ride in a pretty hilly neighborhood too and I know how much that can limit your options. My current scooter is a Circooter Mate and it has been great for the steeper streets near my place. It is light enough to carry inside when I need to and still has enough power to get me up the bigger hills without slowing to a crawl. If you are looking for something that balances price and climbing ability, it might be worth a look.
I have a circooter mate 800w single motor (1000w peak) next to my main, have 333km on it, I think build quality’s medium-fair, acceleration was pretty good, the scooter looked pretty good, range was about 20km for me (220lbs) which also is not terrible but not great. Overall if it serves your mileage and power needs and there is a good pricing on it it may be worth it (I saw a black Friday deal for 450CAD which is just above 300$ USD, can’t go wrong with that imo).
That sounds like a practical setup. Navigating stairs and fitting into the trunk really calls for a scooter that folds down compact and isn’t too heavy. I was also eyeing the Motocompacto,you’re right that its 41-pound weight is manageable, but not ideal for carry-up flights of stairs. I ended up going with a Circooter Mate for my apartment and trunk use. It’s about 48 pounds folded down to roughly 47 × 8 × 19 inches, which tucks nicely into a trunk and is still light enough to carry up a few flights. It gave me way more range and better build quality for a similar price point, and I’ve found it to be very reliable around town where sidewalks are my main routes.
https://www.circooter.com/products/mate-1000w-all-terrain-electric-scooter id reccomend the Circooter mate. It's actually on a real sale rn being listed at $500, it gets up to 25mph and you can expect 20mi of range if you weight around the same weight as me of 1~170lbs
Id definitely rec the mate. I had one for 700 miles. Good brakes and Regen, that sucker could still keep top speed at like 30% battery left someway somehow. 20mo of real range riding on top speed.
I also had a mate, I was getting 20mi of range at 180lbs, and that was on full power so I reccomend it to op as well
Your list looks solid for campus riding. The Max G30P is dependable but you might find it heavy to carry upstairs. The NIU Air is super light but I have also seen the same mixed reviews about durability. The GoTrax G6 and the Segway E2 Pro are good budget options though they may feel underpowered on hills. When I was shopping for something similar a friend suggested the Circooter Mate. It folds down quickly, is sturdy enough for daily use, and has enough range and power for short commutes with a backpack. It is not the lightest but the balance between portability and ride comfort has been really good for campus life. If you can wait for sales around Black Friday or back to school you might see it drop well within your budget.
Same here, I live in a pretty hilly area too. I’ve been using the Circooter Mate and it’s handled slopes way better than I expected for the price. Solid build, good torque, and still under budget,definitely worth a look.

Segway
Ninebot Max G3
Durable hill-climber; heavy with limited range.

Ausom
DT2 Pro
Budget speed demon with hydraulic brakes; slow charging.

Inmotion
Climber
Hill climbing champ, great value, but lacks suspension.

Segway
Ninebot KickScooter MAX G30P
Durable, mod-friendly value, but lacks suspension; tire changes hard.

Segway
Ninebot MAX G30LP
Durable, budget commuter, but slow on inclines and no suspension.

Ranked #1
Inmotion - Climber

Ranked #1
Inmotion - Climber

Ranked #1
NIU - KQi Air

Ranked #1
Segway - GT3 Pro

Ranked #1
Segway - ZT3 Pro

Ranked #1
Segway - Ninebot Max G3