My brother has a pair of LSI 7's, and they are a great little (but very heavy) speaker. Feed them plenty of power and they can really rock. For a bookshelf they have quite a bit of bass (in a small room)
My brother originally had them hooked up to a Rotel 50wpc amp, after an extended listening session you could fry an egg on the top of the Rotel. He now has them hooked up to a 205wpc Parasound amp. The speakers sound much better & the amp stays much cooler.
I absolutely love the tweeter in the LSI, it is nice and smooth, clear & not bright which is the most important factor to me.
I would love to get a pair of LSI 15's but can't manage the weight. If I ever do have to replace my current 19 year old Polk towers, I will end up getting some Dynaudio Focus speakers.