I'm sort of just cruising through all the equipment until I can't enjoy the music with them due to some anomaly I am sensitive about. Technically, the Gilmore Lite was great especially in giving me clean layers in the treble section but in the end they were a little dry sounding, lacking in oomph and a little analytical for me with the hd600s I was using back then.
As for the the Havana, they were just not energetic enough for me. The tubes were expensive yet every one of them had their own coloration in which I couldn't live with in the end. Truth to be told, I prefer something simple and natural sounding without all the fancy colorations and believe it or not, even the FiiO D3 does that for me more than the expensive havana LOL. And I am not a FiiO shill either. Heck I prefer the tonality of my old valab DAC against the Havana too except for its mechanical problems with hum and all.
So far as the e10 against the E9 is concerned, the former is definitely smoother than the latter yet lacking in punch with the hd600s. With my AKGs, the E9 is a little bloated and grainy. Put it this way, I wouldn't keep the e9 around if I only had low impedance cans. I might actually be getting rid of my e9s soon once I can get something better for my beloved hd600s.