Ian over at the blog Squalor to Baller just wrote up a great review on his Gustin jeans. If you are still on the sidelines about Gustin this may be helpful.
I have a pair of classic fit Cone Mills 13.5 oz. in a 31 waist. If I could add a slight taper below the knee I would but other than that they are great, and the pricepoint makes them even more awesome. I was able to visit their manufacturing facility and they are not cutting any corners with these jeans. The material and construction quality are just as good - if not higher - than the other $200-250 jeans made at the same place.
My full review is here.