Sure, throw me out under the bus
On a serious note, I have on several occasions compared my Towers (with both Nrt and raal tweeters) to the Songtowers with the LCY ribbon tweeters. Much of this has been documented over in the AVS forums under our GTG thread. The salks are great speakers ( I have heard several other Salk model lines as well). Are there differences, yes. Which will you prefer? That is your choice. Audition in your home if possible!
I like my ascends for many reasons, after hearing both, I do not regret my decision at all. If I were to summerize the differences briefly, it would be in the bass and midrange mostly. The highs are very similar (both using ribbons and all).