I have lived in the Aspen area for 40 years and have dined everywhere.
One of my current favorites (which I chose for my birthday dinner last night) is Allegria in Carbondale.
Every meal has been reminiscent of an evening in Tuscany. Absolutely delicious authentic food. Chef/owner time permitting visits every table, wait staff superlative.
On top of all that, the prices (for this area) are totally reasonable.
Book an outside table if you can; even though it's on Carbondale's main street, traffic is like a one-horse town and more interesting than annoying.