Well, I just received the pair of used 3s that I purchased. I'm no audiophile so can't describe the experience with the exactitude that some use. The 3's are clearly superior to the Take 5 satellites, but not by leaps and bounds. Certainly more mid bass and a more open, less boxy sound. Nonetheless, the take 5s still sound good for such a tiny speaker.
Of course, I was very impressed by the look of the speaker. I am an amateur guitar maker, so am very into wood. First thing I did was work a little bit on the finish, making these little guys quite beautiful.
I would certainly say that 5 of the 3's would make a very nice lower end HT system, but will perhaps consider the 4.1 in front and relegate these to surrounds.
Dave