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.
You're not talking about below zero temps obviously as "air drying" a bag at -5F is not going to get you anything, unless you have strong sunlight, then a bit of solar action will help break down ice crystals.
Again, when most people say they don't like a VBL, they're usually talking about using it in temps above 0*F, but below 32*F... that's the temp range where I DON'T use a VBL.
