Hi, Ausmish - I bought a set of Aquabells once but in all honesty I never used them. Filling the bells, and the ankle cuffs, with water was a lot more clumsy a process than I'd anticipated, and the bells themselves were quite clumsy to manage in a lot of lifts. Mine certainly might be a minority report because I bought them several years ago and they are still apparently selling, but there you go.
For ease of packing, you might want to consider simply packing your Dynaband and bringing a few Cathe DVD's with band exercises on the road with you. I think I posted something somewhere once entitled "Cathe Workouts On The Road" which listed out all the Cathe floor cardio (no step required) and DVDs with band exercises.
JMHO -
A-JOck