Considering Towers in the $3000 range

I have the Monitor Audio Silver 500's and really like them. Check out the 7Gs as others have suggested.

Eminent Technology LFT-8b. Feel free to ignore the best value in a hi-fi loudspeaker; everyone else does.

I just got a pair of the Walsh Tall 2000s and agree they sound great. The unique 360 degree aspect with super tweeters pointed at the rooms center enable everyone in the room to high quality audio. Also placement is easy and near walls is not a problem. Also reccomended is any used Joseph Audio Tower, such as a 25XL Signature, you could get those used for under $2K.

KEF R5. Great all around speaker with plenty of bass. The dealer told me about the extra foam pieces that can optionally be inserted to reduce the bass!  

I put them on top of platforms (because of a suspended hardwood floor) to remove internal vibrations that clarifies and focuses even further. The deal I got was too good to pass up (R500s, the R5 precursor). I think they can still be had new as leftovers out there and they are a steal under $2K. Not sure how much better you can get for $3K.

I like to audition them, which limits the list to what local dealers sell. Plus moving them around is a pain for auditioning in the home. The best you can do is compare them to other speakers with the same source and electronics.