I would imagine you have had them for quite a while and have brought you many years of joy. If that's the case, to avoid the regret of selling them off, I would explore other speakers by making those purchases one at a time while keeping the Extrema's on standby just in case I couldn't find anything else I liked better.
I'm in a similar scenario with my Vienna Acoustics speakers. I have looked around at other offerings, but I just love the way they sound and look so I don't think I could sell them before finding something "better," only possibly after.