Just came off a Skate Banana and TRS this weekend. Surprisingly, the TRS left me wanting for more. I think the wax job had a lot to do with it as the Skate Banana was brand new and the TRS was used a bit, but the TRS just felt heavier, slower, and less alive.
I switched to the Skate Banana mid day and the rocker really felt lively to me. The edge hold was great and the stability was right there with the TRS, although slightly less stable, but good enough.
I used to have a T-Rice HP and I prefer it to the TRS as they are both pretty stiff, yet I had much more confidence on my T-Rice to charge harder.
Now I'm going off topic, but in terms of your question I believe the Skate Banana is a great go to board for smaller East Coast mountains. I cannot comment on the Proto.
As mentioned above, the Rossi Jibsaw is also a pretty sweet board. It presses better than the Skate Banana and pretty much does it all.