My personal model of viola with a 16" back and standard proportions of the neck, stop and strings length making it a delight to play.
After studying many Violas played by professionals that came through my workshop, I amalgamated the best bits to make my own model. I can change the set-up to your specification, but the standard is for a lovely deep warm sound. It will respond well to changing accessories, so different strings, soundpost position and tailpiece can give it more punch if you wish so.