Size and easy to clean (and waterproof) is one, I have a ChefSteps Joule which is app control only, but it is much easier to clean, and much smaller than my old Anova (fits in a drawer with other crap)
Granted it is more annoying to use the app than the controls, but the trade off for us was worth it, if not for everyone.
VRAM or regular RAM? It doesn't use that much regular RAM.