Nothing better than combining business and pleasure. I would love to assist if necessary with the trip to these exotic locations on basis of fare and lodging paid for.
Otherwise, top centres in the business are all over the place and they do different things in their own way. Perlisten S7c might fit your requirements. Revel C426Be might be too big but equally good if not better in some aspects. Arendal 1528 monster center is another solution - but likely too big. Below this price range there are many others that would be a lesser companions to your mains, but potentially could do the job. Not counting real exotic centres beyond 10K as it really makes little sense in terms of value, at least IMO.
For example, a really competent center is surprisingly Sonetto II Sonus faber center, but I replaced it as it was not able to keep up with the larger towers I got. Not sure how your towers actually sound, or how loud or low they can go, so can't really say it this would be the right choice.