My brother owns a pair. (For the record, he drives them with a receiver, which is fine, contrary to some of the ill-informed opinions out there. But one should have a unit that is decently high powered and is fine with 4 ohm speakers.) For the money, I think they are fantastic. They sound almost as good as the higher models. They are more limited in maximum output and in bass. Being shorter, you might be too much above them while standing, depending on how far you are from them.
If I had $600 for a pair of speakers, and if I were going to buy new, and if they would fit in the space I had, and if the amplifier I had could adequately drive them, there is no other speaker I would even consider. With them, you get a glimpse of the high end at a very reasonable price.