Very nice vacuum cleaner. I had one before my felix, but because my house is multi-story and full of corner and such, it was a bit of a lump to manoeuvre, although the performance and build quality was typically SEBO - incredible. Although I had a suction leak near the bag full indicator, it used to whistle badly, form new as well, but that would have been just my one I guess. Same power nozzle as the felix of course, meaning it is one of the best in the business.
What I also love about SEBO's and what makes them the best bagged vacuums in my opinion is the filtration quality and the bags being inexpensive. Also, the suction on this model comes from the top of the bag meaning it should loose very little suction as it fills, that's what I found with my one, although it was the 2,400 model, although the difference shouldn't be a great deal in terms of suction.
Glad you like it my friend !