Gryphon vs Luxman vs Accuphase


Thinking that I may bite the bullet this year and get into a Gryphon Diablo 300 but before I consider shelling out that much, wanted to get some input from any of you that have heard this amp in comparison to Luxman or Accuphase. The 509X from Luxman costs half that of the Gryphon and is more within reach. The Accuphase E650 is not that far off the Diablo 300 pricing. IF the Gryphon is better in your mind, curious to hear whether you think the Luxman or Accuphase come close?

It sounds like all 3 have rave reviews. One is a class A while the other two are Class A/B. 
freesole
Thanks @greginnh You may be one of the few that have heard a variation of all three company's integrated amps. Did you think that the Luxman lacked any in the dynamics vs the Accuphase or Gryphon? I currently have a Line Magnetic 805ia which is Class A and comparing to the Primaluna Dialogue Premium HP which I also had at home for a while to try, I found the 805ia to be much more of an enjoyable musical experience. More dynamic, more depth and clarity vs the presentation of the Primaluna. 

My speakers are Spendor D9's and my source is the PS Audio Directstream Junior. Unfortunately, no local dealers for Luxman or Gryphon anywhere near me in Seattle. 
freesole, you might also give the new Luxman L-590AXII a listen, if you have the chance. Class A to 30W/channel, then A/B up to about 90W into 8ohms.
Yes, I love my class A Luxman L-590AXII.  Before Luxman, I was using the Hegel H360 and was thinking about upgrading to the Gryphon Diablo 300.  I've heard the Diablo at the audio show and loved the sound.  But thanks to @greginnh for recommending the Luxman to me.  I took his advice and got the Luxman without any audition.  Now I don't have much desire to get the Diablo.  The Luxman was way better than the Hegel H360.  I've never heard the Accuphase, but I don't think you can go wrong with any of the 3 amps. 
Agree with Greginnh, its very important what speakers and what are the speaker and power cables you will use with these amplifiers. A lot of people underestimate the importance of cables and system match.
Hearing a lot of good things about the 590AXII. Have @respected_ent or @builder3 heard both the 590 and the 509? Curious as to what the differences would be in sound.