I own both a Jumbo Java T95 and a Berg 120/0. I play a 275xxx selmer mark VII. To me, the Jumbo java sounds warmer on the bottom range, but brighter on the upper range compared to the berg. The berg has it's own sound, almost like a fuzzy edge to the sound, and the upper range wasn't as shrill as I thought it would be. The bottom range is thinner sounding than the Jumbo. The Berg really likes the altissimo range, the notes pop right out.
I think the Jumbo had a more flexible sound, I can shape the sound somewhat with it and back off some of the edge for ballads. The Berg just has a less flexible sound to me, not bad but not as versatile.