Magic returns in seldom used bookshelves?

I've always been curious about the Sierra's -- right up to the point of buying them. I bought Salk SS6m's. I love them.

One consideration might be the speaker-room synergy or lack thereof. One speaker is a tower and the other is stand mount, no? Perhaps there's something nimble and direct about the Ascend which the Salks, in your space don't have? My Salks are standmounts, and they beat out a variety of towers. 

If I were you, I'd be very sure the Salks were no longer your cup of tea. I think Jim makes heirloom, high quality stuff and I'd expect it would take a long time to tire of them. Still, never know. Sometimes a divorce is just what the doctor (or lawyer) ordered.

These debates are frequently hard to sort out on an audio forum, because they come back to what kind of opportunity cost it is for *you* to keep potential money locked up in those speakers. If you had something else valuable to your audio endeavor you were not buying because of the money locked in the Salks, it would make sense to sell them so you could continue your hobby. Otherwise, the suggestion of rotating them in and out (with other amps, positions in the room, etc.) is a valid one.

Then again, the answer may just be as simple as this: your ears are your ears, and speakers are just speakers. I wish I liked lobster better than I do; I know people say it's a delicacy, but I really prefer a good steak. I don't order lobster in a nice restaurant, because I know my tastes (and tastebuds) are not lying to me.