David: After looking at your ad, I would not think that the 2 2s (I should not have said 2.2, as Bose sued Thiel over that "point" between the 2s and got Thiel to change the name--sorry, Bose, it won't happen again) would be a substantial improvement over the 3.5s. Updating a crossover, even with the same spec'd parts, is likely to result in a substantially better-performing unit, although you'd obviously be in a better position to know from hearing it. Since you know the sound of the 3.5s, I'd summarize the difference by saying the 2 2 is less spacious-sounding, a little more coherent and a little less bright, with slightly less extended but better quality bass. If your listening biases don't take you below 30-40 hz, it is a better speaker.
