Build your own. For $1500 you can get a lot more speaker if you DIY. This can be from a complete kit that includes cabinets and crossover all the way to building everything from scratch.

Also, follow Lena's advice and concentrate on the front first. I've built front and center, but am still using some dinky 15yo BA bookshelves that I'm in no rush to replace, not even with my old mains.

To find out more, do what everyone else does: www.google.com.

Also try www.madisound.com as they have lots of kits.

(BTW, my fronts are Proac Clones from scratch and center is the Audax design by Joe D'Appolito from a partial kit)