I have the Salamander Guide:
SALAMANDER PADDLE GEAR
What I like about it is the tow rope and its spectra, but I do think it throws the greatest. Any long distance throws it just seems to be a little off balance and not the most accurate. Even after extensive use in a swiftwater class I still much prefer my standard bag.
I saw one I really liked, might have been made by Mongo, that has the waist bag that fully detached from the belt so it was pretty much just a regular throwbag once your using it.