The Krell and the Levinson are in a different class than the Sunfire. The Krell FPB300 is a newer design than the Levinson 333 and to my ears a much better choice. A harder choice would be between the FPB and the Levinson 336.
Have fun. (I own the FPB300 and find it FANTASTIC!)
Richard
Have fun. (I own the FPB300 and find it FANTASTIC!)
Richard