best monitor speaker under $2000

By all means, buy used. You can get some (gently) used 2-3 year old speakers for 1/2 of their original cost. And, providing they are well-made to begin with, you'll get another 20-25 years of use out of them.

Then, take all that money you saved and use it to purchase the best quality source material you can find. Your ears will thank you profusely!

-RW-

Check Tyler Linbrook speakers in Agon. You may be lucky if the sellers are nearby in local pickup distance.

Listening's not going to do you any good if you're not listening through your Rotel. The Rotel is very difficult to match with speakers IMHO.

What do you mean by monitor? Do you mean stand-mounted speakers?

Of course you should listen to lots of speakers. We all should.
But, if you can't and you want a suggestion (seems that's what your looking for) I suggest the Gershman V-1s. I use them in my living room with a Denon receiver and hear excellent tonal balance, very good soundstage and engaging music.
You will need good stands- Altlantis is what I use.
There is a pair for sale on Adgon at $550. Not a bad price.
If you go there, demand that the seller ship the speakers in separate, very well packed boxes. My speakers were dinged up because the seller shipped them in one box.
Good luck.