I've lived with the Heavensgates (60W single ended tansformer coupled zero neg feedback monoblock amps) for about a year. If you like the fuller and somewhat softer SE sound, the Heavensgates would make you very happy. The VZN-100 OTLs (and this is a several year old pair which have seen some updates - .i.e. not current Joule state of the art) though have a sense of purity that the a transformer output amp can't match. The additional power is nice too as the sound with the VSM-MX's is so pure, clean and uncompressed, it nice to be able to play certain words at more concert hall like levels.