I bought mine as a demo about 12 years ago. I had decided on the Summit X but have decide to be a lot more rational with my money and assist my grands in college. I ordered the Maggie 1.7. But will keep my Quests and tweak them as I feel there is a lot of potential in them.
If you want a ML speaker, a used Prodigy would be great, especially since you are used to the bigger panel. Spires are good but the Summit X was more to my taste. I thought there was more presence from the panel. ML advertisement notwithstanding, the smaller panels are not to my taste.
If you are a fiddler, the CLS can't be beat and they are going for around $1k. They are great speaker (arguably the best (excepting the CLX) with modern amplification).