Schubert, the price difference is too big to compare them. If you have local stereo shops, you can audition two speakers from the same brand and similar price range. First thing you'll notice huge dynamics on the big expensive speakers, which cheaper speakers will lack.
Having said that, I have both speakers, and if your room is big the Adagios will suffer on big symphonic pieces. I used mine with a sub. Otherwise, they are very good speakers. Very smooth and non-fatiguing.
