I have used VBLs, and hate sleeping in the things. For me for tips of 4 or less nights Id rather have a bag that enough loft to function even after several nights use and forgo the VBL. Much more than 4 nights or so and you will need a VBL unless you can air or dry the bag during the day.

The collection of taxes which are not absolutely required, which do not beyond reasonable doubt contribute to public welfare, is only a species of legalized larceny. Under this Republic the rewards of industry belong to those who earn them. Coolidge