I want a warmer high end

I was experiencing the same problem.On the advice of several members here,I switched to a speaker with a fabric dome tweeter,problem solved.Good luck.

try moving to Florida

Try some Cardas interconnects.

Listen to CDs that are not bright. I have about five of them. There aren't many out there.

Also a previous Paradigm Studio 60 v.2 owner. They were too bright for me, irritating really. I never really tried some of the advice mentioned above so it may work for you.
As for speaker recommendations, I'll give you the three models I found to be the best in your price range. First on my list is the Soliloquy 5.0 monitors, these are extremely fine speakers at the used prices. The main problem with them is the company is long out of business. Next on the list is the Quad 12L2. These are very good for $500. Very smooth sound and if you like a glossy finish, they have a superb one. Lastly, I like the Polk Audio LSi7. I bought a refurbished pair from Polk on ebay for less than $300; absolutely perfect condition. Good luck with your search.