The general rule of thumb seems to be aquilas for strumming, worth strings for plucking. I've used both, and a lot of it is a matter of preference. The Aquila strings are louder and brighter, while the worths are a little softer, and are more comfortable to pluck than aquilas. I'd base it on the type of music you plan on playing. One thing to keep in mind is that the worth strings are more expensive, but the packages contain strings long enough for two sets.
Also, the brown and clear worth strings seem to be pretty much identical sonically. If you decide on them, choose based on aesthetics, there's little functional difference according to other UU reports.