Everyone's preferences (I repeat, everyone's) in speakers will be different. I think they inspire more loyalty and dislike that any other component. Ask a question on the internet, and 12 people will reply with 17 different answers.
That being said, since you asked, my own personal "favs" are ProAc, PMC, Spendor, Vienna Acoustics, Silverline. And given your previous experience with Klipsch, I strongly recommend you take a look at Spatial Audio. Their M3s can be had, used, in your price bracket. They might be just the ticket.