Wouldyou have another brand speaker next to mains

Have you ever wanted to purchase on a "whim" another set of well reviewed speakers to alternate with your main speaker system??? What reason?????? Just to alternate or rotate the type of sound and musical presentation

IThe second set of speakers does not have to be comparable in price or performance, but have very good reviews and testamonials to the quality of sound. I have a friend who has a pair of Sumiko Vienna speakers, but bought a used pair of De Capo Reference 3's and loves them, even though they are not equal to the Sumiko

Another friend has had a pair of the Acoustic Zen Adagios for 3 years, loves them, but liked the Martin Logan sound and design concepts He has read about the new ML Electromotion ESL since CES 2010, and we finally got to hear them last weekend at a Magnolia Referecne store and he likes them alot. ( I also liked them more than I expected) We both agreed that ML's throw a larger and deeper soundstage than the AZ Adagios, but are not as dynamic, and not quite as neutral. Compared to past ML speakers, this new hybrid has got some serious, clean bass.

Of course with any ML speaker, placement and set-up are a pain in the ass. Stat panels must be plugged into wall AC, or better one power line conditioners per speaker which adds expense to the purchase So my friend is waiting 6 months to see if any "used" ML EM-ESL's come up on AG. They retail new for $2195... Personally I think he is nuts, but then again, I once bought a pair of large Orginal Advents while trying to decide on a new speaker

Would like to get input from other members on this question... and issue?? Some members have revealed they do have an alternate set of speakers despite the outlay of money, room space, and.... complainig wives or GF's Should make for a fruitful discussion!!!!!!!