I have a Bianchi Nyala much like yours, but mine had double butted tubing. I like the frame pretty well, if you can deal with the 1 in headtube then it'll be great.
Here's my build:
It had a mix of Deore and XT parts on it. Now it's getting stripped and repainted, I'm going to rebuild it with some old Deore LX and a 90's Manitou fork.
Enjoy your Nyala.