New to vintage vacs, have three options, don’t know what to choose!

[y’allqaeda]

Hello all! I’m very glad to have found this place!
I’m the type of guy that has a 30 year old whirlpool washer and dryer set that I repair and keep going because they are simply superior to every modern option. So when the time came for a new vacuum I started looking for vintage options.
I found a local guy who has 3 Kirby’s for sale-a Santronic VII (400603), 519 (431597), and a 561 (472654).
All have seen better days but I will likely rebuild myself or send to Kirby to have rebuilt (I didn’t even know that was an option until I found this place.) each for around $100.
I’m not sure which one to pick? Any input on why one would be better than the other?

 

[hoover300]

Welcome!
Those are all the same machine underneath. It kinda just goes off condition, and which one you like the looks of the most.
The Kirby rebuild program from factory I am fairly certain was recently discontinued for non-original owners, or at least they will only rebuild the 80s models and onward now