Arthur
I think you made the right choice here.
First off, your experience with the Miele carpet/floor nozzle sticking to the carpet is spot on. It seems most manufacturers are trying to greatly improve the carpet cleaning efficiency of their powerheads & carpet/floor nozzles to make the most use of the suction/airflow the vacuum produces, since they have to deal with the new EU guidelines for decreased power consumption. However, I think if you had ordered a Miele C3 with the SEB228 powerhead, you would find the Miele to clean equally well, if not slightly better, & you would not have the problem of the head sticking to the floor. In addition, the Miele Airclean bags are superior to most other HEPA Cloth bags on the market, since they are 9 layer bags....they are superior in respect to the fact that you can literally stuff the bag to 3/4 full before you start to see ANY loss of suction, even if you are picking up fine, powdery dust, dirt & sand. Due to this, this more than makes up for the higher price of the bags, since the usable capacity before changing is much greater for Miele.
Having said that, the build quality of Miele's canisters is definitely inferior to that of Sebo's canisters, & might I dare say, extremely overpriced for the build quality you get. For this reason, I would choose Sebo over Miele. One major area Sebo wins points, in particular, is the quality of the powerhead neck, overall design & the wiring used. I owned a 2004 Miele S558 Red Velvet with the SEB236 powerhead, & the 2 major problems I had was with the powerhead neck wiring failing prematurely, & the cordreel. I had it repaired once, & after only 7 or 8 uses, it broke down again! At that point, I was so fed up I jury-rigged the powerhead neck wiring myself & made it so the electric wand was permanently attached to the powerhead, & bought a spare wand from the local vac shop to use with the floor brush. The ONLY WAY now I would recommend anyone to buy a Miele canister, regardless of which powerhead it comes with, is to buy a spare wand & leave the powerhead permanently attached. If you don't touch it, it can't break. It is my opinion that Miele's powerhead neck wiring is too thin & brittle, & not capable of standing up to daily use & repeated inserting & removing the electric wand to use both the powerhead & floor brush. This also applies to generic Wessell Werk powerheads other manufacturers use, since Miele's powerheads are re-badged Wessell Werk products. In addition, the onboard tools for the Miele are unacceptable for a TOL canister in it's price range....the crevice tool is ridiculously short, & the dusting brush is too small. The Parquet Twister floor brush is too big....while it picks up fine dust & sand perfectly fine, any large particles, such as a dried up pea or small pebble, you have to move the tool in a million different directions to pick up large particles. The optional handheld turbo brush, while it works great, gets pet hair wrapped around the brushroll, & unlike other handheld turbo brushes, it cannot be opened up completely to clean out & cut away the hair.
Best of luck with your new Sebo.
Rob