No brainer buy considering the producer and quality of vintage. My favourite is the Pajore, followed by the Curra. You really can't go wrong with any of the wines though.
A +1 on Futronic's post. Try them. I also like Pajore of their crus. Some of their crus can be on the weighty side for Nebbiolo and need cellar time. Sottimano is equivalent to a "grower champagne", a smaller producer with good vineyards.
From Sottimano you can see people out on Gaja's patio tasting wines across the valley. We waved, LOL. It speaks to how close the wineries and vineyards are.
Rant on - If their wines were available in the state of Texas I would buy them. Thanks to the lame distributors they are yet another winery shut out of this market.