speaker selection help ... on a budget

I have a Rotel RBX980 120W/ch amp with a RTC980 pre that I recently bought for a great deal.
I understand they are rather on the bright side as a combo and wish to match them up with a pair of bookshelf speakers that would add some warmth and decent bass extension. I mostly listen to rock / r&b / jazz.

My budget is $250 tops for the pair. What are some good options for new or used that you can recommend?

thanks for everyone's time!