Electrolux - Epic Series 6500 SR

You should be able to get a refurbished Electrolux on eBay for $400 or less. I have an 8000 and a 6500, both purchased on eBay, about 20 years ago. The 8000 was traded in to a Vac shop because its elderly owner said it was too heavy. It was like new and a bargain at $300! The 8000 is just like the Guardian, but without the costly hepa filter. It still uses an after filter, and runs cooler and quieter than the Guardian.

I would really recommend an old Kenmore.  It’s a canister vacuum, you can still buy them new.  However, they show up at goodwill for like 20 bucks.  Replace the bag and filters, clean the roller and you have a really solid machine.  All the attachments are inside the body and it can be stored in a closet or under a bed.  Plus if something happens to it you don’t have to feel bad because it wasn’t super expensive.  Also a Electrolux canister is a great option too.  I will also say a Kirby, but they do take up more space and the hose situation is kinda bizarre.  They are like $1,000 new, but you can get them at the thrift store for like $50 bucks.  Also change the bag and belt on that if you get it.  They are built like a tank so you don’t really need to worry about it getting a little abuse. If you really want something new I think this would work for your situation: https://www.homedepot.com/p/KENMORE-200-Series-Bagged-Canister-Vacuum-Cleaner-BC4002/308593772?MERCH=REC-_-pipsem-_-308593689-_-1-_-n/a-_-n/a-_-n/a-_-n/a-_-n/a Once you get a house/ apartment you can look into a Kirby/Miele/Electrolux.  Just order it on line. Dorms can be a lot on appliances.

I have an Electrolux canister vac for nearly 15yrs. My mom’s had the older model of it for as long as I can remember, probably close to 30 at this point.

Least favorite: Bissell uprights. Every one I've ever used, the end caps for the brush roll has melted. I also find the suction power really lackluster and feel like they scatter more dirt and dust than they actually collect. Rainbow - gigantic pain to use, too high maintenance, and the water is gross AF and messy to deal with Cordless sticks - not powerful enough for my liking, multiple passes to pick everything up and they die too fast. Favorite: Windsor Versamatic, Old school style Electrolux and Kenmore canisters, old school style Hoover uprights, Windsor XP-12. Just good, sturdy, effective machines.