Consider the Cary SLP-05 tube amplifier with tube rectifier power supply. In my experience it is "lusher" than the CJ. It was Densis Had's no holds barred pre-amp and is a real upgrade from the SLI-80. It is quite detailed and lush at the same time It has a high output impedance, so you should have a high input impedance on your amp. Had is no longer with Cary, but they still sell and support the SLP-05.
Prima Luna is also popular with many, although I do not have any experience with it.
Prima Luna is also popular with many, although I do not have any experience with it.