Oh so many options . . .
for a daily driver. I'm currently relying on my Kirby Legend II for deep cleaning. Although I have a number of G-model Kirbys to pick from, the Legend II is my favorite from that era of Kirbys. It has plenty of power, and the latest Kirby hepa bags are super good. Besides, the Legend II is a good-looking model--one of the prettiest.
Another upright I depend on for quick touch-ups around the house is the Riccar Supralite Premium R10P. This is a nice vacuum. I would recommend it to someone looking for a lighter upright that can do a nice job and zip around with ease. I got mine with a great deal when I traded in an Oreck.
For a canister cleaner, I like the Miele C3 Marin. I bought an adapter to fit the end of the hose that allows me to use attachments I prefer from other cleaners.