Hoover still has the guardsman listed on the commercial website, but I’m guessing it’s a special order. So they count (even if the guardsman isn’t widely sold anymore). Kirby’s another one that I know that still uses an old design. Although they have modernized the design of the machine, it’s still the same fan facing forward, and bag the side design from 100+ years ago. Those are my favorites. I’d also say Royal, but now it’s just dirt devil. I’m not too familiar with other brands (as in I’ve not really used them) so I can’t really call any others my favorite. Oreck, unfortunately, I’d say I don’t like at all. The fill tube just looks too narrow that it’ll clog. And while good on them for having a design that has stood the test of time, unfortunately previous experience with an oreck magnesium (it always clogged!) has forever shaped my view of their machines (particularly because the size of the fill tubes has always stayed the same).