Go for the Aego M over any Logitech stuff. Before any one crucifies me, the Logitech's dont sound bad, but they dont match up to some of the other kit out there, except in over the top, over-accentuated, flabby bass, and are often lacking around the midrange. Compared to a lot of PC speakers, they're pretty good, but there are better things out there, unless you like having stupid amounts of relatively uncontrolled bass.
Sorry if I seem rather critical, but thats my opinion on them, and lets be honest, a lot of people who've heard these and rated them highly will not have compared against anything other than average cheap pc speakers (horrible), or poor mini hi-fi systems, which on average sound pretty basic in the first place. Compared to other high end audio, there are other things that will blow them away in overall sound quality and frequency range.
And yes I've listened to plenty of Logitechs, various models are constantly in use at my workplace, and several of my friends have various models, some of whom have now dumped them to move up to hi-fi gear themselves for the better overall sound quality.
Aego M's on the other hand have a pretty decent reputation all round for the price, and Acoustic Energy (the manufacturers) make some pretty high end hi-fi audio kit, so are definately a reputable make. As noted on some reviews though, like standard hi-fi speakers, the Aego's do apparently appreciate a bit of a burn in to fully realise thier potential.