I'll have to politely disagree with you here, Ken, about Aquilas sounding fuller. To my ears Aquilas tend towards emphasizing the high end with an decent increase in overall volume. They're very bright and loud as far as strings go. They're also a bit thicker than comparable strings which probably contributes to the volume and the feel which some prefer (my wife for example). On certain ukes they sound rather harshly bright to me, but just about right on others and always seem good at livening up a cheap laminate. I can't speak for spruce, but I wasn't fond of them on a cedar top.
The Worth's on the other hand have a more of a pronounced midrange than the Aquilas, so to me they actually seem fuller sounding and for particular instruments more balanced. I prefer them on some brighter ukes like Koaloha because they warm up the sound without losing the overall bright character of the instrument. (I also find them a bit more economical since Worth gives you enough string to make two sets.) They've sort of become my default strings over the last year.
But as it is, it is a subjective thing. Everyone's mileage will vary and I agree 100% that it's well worth anybody's time to try things for themselves. Strings aren't really that expensive and there's likely a good match of string to uke to be had for everybody. At worst you spend a few bucks, but in the end you know for yourself what works for your personal taste.