I have the Lsi15s. Have Loved them for 8 years now. May go with the LsiM 707 if / when I am convinced they are a 'real' upgrade. The biggest problem with POLK is the name POLK and the reasonabl;e price. Real people can afford them and can purchase them at real stores.. Now, if only a few fat cats could afford them, and you had to kiss some snobbish salesman's butt to buy them, they would be the darlings of all the anti-music, Audiogearphiles and their guru reviewers.
Cheers
Cheers