[ahsonwardak]

From our experience, this has been correct. It may be better said that a lot of time with one user walking through and testing the UX of a site is worth more than several shorter tests with more people. If you start multiplying that deep dive with fewer users, you'll quickly see the major UX fixes that are needed.

Additionally, the most obvious UX fixes are the ones that will greatly improve your site anyway. As more UX fixes that are suggested, you'll find that they are a product of differentiated user preferences than needed UX fixes. That's not a UX fix. It's having certain parts of your site customizable in look and feel.