My 710 has a more centered blade than my 110. The 110 does have good fit and finish, though.
I think the jump in price from a 110 to a 710 is more about materials than fit and finish. Buck makes knives that cost as much as the 710 in the same factory as the 110, and to the same standards as the 110. So buying a Buck Strider 880SP instead of a Buck 110 will not get you better fit and finish. Likewise, buying a BM 710 instead of a BM Griptilian will not get you better fit and finish. The companies do not spend more time on quality control on the 880SP and 710 just because they have higher materials costs than the 110 and Griptilian. For the small price jump from a 110 or a Grip to a 880SP or a 710 you get better materials, but the quality control remains the same. Same factory, people, and standards. The price is higher since the materials cost more. Hence, I think the notion that a 710 should have better fit and finish than a 110 just because it costs more is a bit ignorant. They are in the same quality class even though one knife costs more (for the materials).
To get better quality control than a 110, you need to spend even more than you do on a 710.