TubeNet

We all know the dismal history of the bottom of the line 6 valve F The top of the line 6 valve F received a good review on here some time ago. Does anyone have experience with or own the two mid-range Schiller F tubas? One is the 4p/1r model with 16 inch bell. The other is the 4p+trigger bronze/gold model. I am asking for feedback on these two instruments and not a review of their seller's customer service. Please speak on what you know first hand.

Thanks