The best budget CDP we had was the Nano. I am not sure if they are even made anymore. It was the size of a CD jewel case approximately. It was just plain awesome. Then we thought the Rotel's were pretty good plus we got to pop the top and upgrade some parts, etc. Other than that, the old Marantz CD-94 was excellent. Most everything else mentioned here is IMO ho hum.
Happy Listening.