I wear this look a lot... IMO, the best jeans to tuck into boots are skinnies. Nothing works as well. I do have ankle length COH paley jeans which work just as well, because they are also really skinny... and the Avedon is good, too. Bootcut just doesn't look as sleek, and flare is an absolute no go... it will just look sloppy.
Here are some of my very favorites!
J Brand 10 inch skinnies
http://www.shopbop.com/ankle-skinny...4302031296&fm=browse-brand-shopbysize-viewall
Have and LOVE these... like the 10 inch skinnies, but even more fitted and stretchy, so they are very comfy!
http://www.neimanmarcus.com/store/c...FN%3D0%26Ntt%3Dj%2Bbrand%26_requestid%3D23671
COH
http://www.revolveclothing.com/DisplayProduct.jsp?product=CITI-WJ425&c=Citizens+Of+Humanity+Jeans