Originally Posted by
msu2001la
Changing to a double crankset doesn't accomplish anything other than removing a tiny amount of weight and getting rid of 10 gears.
Fixed.
In your own post, you said that the 42 tooth middle ring covers most of your riding. There's little reason, other than vanity, to change. And if you're riding in the middle chainring the vast majority of the time, cross chaining is not an issue.
But it's your money.