Best speakers to buy for around $1,500

Kef ls50

I would consider a bargain on rega rs5, as they are being discontinued. You probably can get them fro $1200 or less new, and they sound incredible low-midrange to treble, no one can argue on that. Bass goes low to 40, the quality is arguably good. I own them.
Magnepan .7 is another great choice, so is Vandersteen 1C (I have owned them). If you look at Focal, even at half the price, they are still ugly and hot in the treble, with no bass... never a bargain.

Another thought, if the Tekton Pendragon or Enzo are too large the Lore S is within your budget new. Last, and surprised this one hasn't come up yet, is the Monitor Audio Silver 6. Nice review in GoodSound. I think all the Tektons I mentioned and the Silver 6es would all be a big step up in refinement and provide you a much more audiophile-level experience overall while maintaining or surpassing the dynamics and slam you currently may have or want. Not a lot of speakers can do that (at least well anyway) at your price point IME. Again, best of luck.

no wrong or right answer of course, but if it was me i'd opt for a really good monitor like the kef ls, totem model 1, dynaudio, etc., rather than one of the good-but-not-great floorstanders you'll find at that range. you won't feel the need to upgrade as much and have a more portable thing you'll always find a use for

All I can say is if you like the Cerwins, go for the JBLs I mentioned. They can rock the house but are clearer and more defined. Some dealers are still selling them for $800 a pair.