Magic returns in seldom used bookshelves?

Personally, I would upgrade to the ex now. 
That way you can compare them to your Salks.

You may well find the Salks increasingly satisfying over time.  Like some, I suspect that much of what commonly is reported as speaker "burn-in" instead reflects the assimilation of the listener to unfamiliar sound dynamics.  It is unlikely that your Salks will lose much resale value in the meantime, so little need to rush.  As for the Sierras, perhaps the lesson is that you just love that particular sound, and if so, why even upgrade to the EX?  You may invite the same phenomenon again, particularly going to tweeters more similar to those in the Salks.  

These Salks are well past "burn in" stage and have been satisfying for well over a year now. I debated when ordering the Salks if I should stick with the ribbon option or "upgrade" to the berrylium tweeters along with the specific midrange the "BeAts" version of the Song 3 offer, and after talking with Jim, the decision was made.

Again nothing at all wrong with the Salks and I know they would sell quick (especially with this stunning finish) but am nervous I would regret selling them down the road. 


Based on the recommendation above, I think I will upgrade the Sierra's to the EX model and then listen to these side by side and report back what I decide. Can I keep them both? Yes, but could I use the proceeds from the reluctant sale of the Salks elsewhere? Indeed

Appreciate all the feedback here. 

Time to drop the needle

I like the plan. Report back when you get the upgraded Sierras in the system.

I have noticed over the years that the same set of speakers can sound very different depending on the room that they’re in. I’ve moved into a new house before and the speaker that worked so great at the previous location now leaves me less desiring to listen and vice versa with a speaker I wasn’t that crazy about now sounds great. 
I say if you don’t plan on changing rooms or houses then maybe consider selling the Salks but if things do change and you move you’ll never know if they would be ideal in the new location. Salk Songtowers were my first real “audiophile “ set of speakers and wish I had never sold them, just for nostalgia sake. They were wonderful.