Hi there!
Our equipment: 6506 (on ios) + a lot of 2950,2960,3560.
Each distribution catalyst is connected to core using 2xGb ports, these two ports are bundled in etherchannel. As I said we use MST for spanning-tree mode and we have 200+ vlans on all switches (no prunning).
The question is: is it ok to have only one mst instance for this design?