AmaWaterways vs Uniworld?

Hi there,

Thinking of booking a river cruise for sometime this summer on the Rhône, Burgundy/Provence area most likely, solo occupancy. I’ve never done a river cruise before so am unfamiliar with the different brands. Has anyone had experience with both ama and Uniworld, and could share the positives/negatives of each? Decor (which I’d important to me) on uniworld’s SS Catherine seems to have Ama’s amakristina and amacello ships beat by a long shot, but how about food/service/excursions?

Thanks for the help.