Numatic George
I had a George but I sold it after a few months. I really only wanted it for above floor cleaning, for the stairs, upholstery and car interior as the suction on it is far greater than the hose you get with many upright carpet washers. I found it very effective with the small wash tool but didn't bother using it for carpet cleaning as it would be hard work. I used the floor washing tool a couple of times but because it's awkward to set up, I can't see anyone using the George to regularly wash floors. There is quite a lot to store away too, with the two hoses and solution tank. An upright carpet washer with a hose has the same downsides as an upright vacuum with a hose. They tend to be easier to use on carpets but awkward when using the hose and the suction isn't always great. The best solution if you have the space and money is get an upright carpet washer for the carpets and a tank type 3 in 1 for everything else.
Currently I only have a Vax Oasis complete which is the nearest I could get to the Hoover Brush N Wash that we had for many years. I find it very effective on carpets and it does extract most of the water meaning the carpet dries in less than two hours. It is very noisy though. I also have a Bissell Spot Bot which is used for occasional spillages but it leaves the carpet quite wet when using the auto setting so I tend to go over the cleaned area with the hose which rather defeats the object of having an automated cleaning function.
Regarding new vacuums, I would like a Sebo K3 Premium, or a C2 Total if I can find one. I have just purchased a Sebo Professional G upright from Ebay de but it hasn't arrived yet. I have owned a Sebo X4, X1.1 in white/grey and red/grey and an Ensign Sleath, all from brand new but all were sold as I kept forgetting how annoying the auto height function is on all these models. The brush always seemed to set itself too high and I was constantly raising the cleaning head off the carpet until the wheel adjusted itself to the lowest setting. I would then have a few precious seconds of decent cleaning before the brush would be lifted off the carpet. I'm hoping that the G model with its manual height setting will perform better as I will be able to select the height I want rather than the on board computer.
I am currently in my Sebo phase again so most of the new vacs I want are Sebo's. I would also like a D4 Premium and a Felix Rosso.