Stand used for my Firebird (F) tuba looked disctinctly bendy with the Bruckner (C), particularly as it is gold brass. Kingsize stand much more substantial, much more confident in it's stability. As usual with K&M the rubber covers for the bolts tend to be a little too easily dislodged, and it's always best to check the bolts remain tight. The wear on the laquer on the tuba bow where it rests on the stand is a small price to pay compared to the wear and risks of resting teh tuba on it's bell.