These are the vacuums that I have had experience with:
Pro Team Backpack
This kind of vacuum saves time and it leaves the air cleaner. You can buy a beater brush attachment, though I do just fine without.
I use mine every morning.
Pro Team Hip Pack
This model is lighter and more convenient for a smaller application
the Riccar Vacuum
I have used these for over 10 years. They have held up well for me and the price is not outrageous. Manufactured with quality materials, metal beater brush on some models.
I like the handy hose and attachments, but there are many different models so choose wisely. Some models are heavy.
They are made in the USA.
the Dyson Vacuum
I used one almost everyday. It manuevers easily and easy to empty. I like it.
The hose tool is awkward to use.
Did not last that long, made of plastic.
the Oreck Vacuum
A nice machine and I do use it. It is convenient for moving from hard floors to carpeted areas. The price is a bit high for a simple machine, ( I believe this model is $299). Sometimes you can find them for less.
A disadvantage is that the air flow goes through the fan area and you will have to replace the fan after a long time, but should not be a problem. If it clogs you have to disassemble the handle because the air goes through it in the older models, but I have been able to do that myself. Bottom plate comes off easily for belt changes and holds an extra belt.
the Sebo Vacuum
I like the vacuums with an easy hose attachment. The Sebo is pricey and a bit top heavy, but the hose attachment is very handy. This one is from Europe.
I bought mine several years ago, the one I saw online recently is over $700.00. You don't necessarily need an expensive vacuum to start with, but you do get what you pay for.
This vacuum has a metal beater brush base and there is an indicator light to tell you if it not functioning correctly