Bryston B-100 or Luxman L-507u?

Thanks to all for your quick responses! ;-) I had the chance to listen to the Bryston B-100, Luxman L-507u, an Ayre integrated, as well as one big brute made by Marantz in a shop in Akihabara yesterday. But the listening conditions were far from ideal. People kept on coming in the door off the street, sirens going by outside, speakers were not the same as mine, delays in switching between the amps, etc., etc. So I can only take my own impressions with a hefty grain of salt. FWIW, I thought the Luxman had amazing imagery, very 3-D like but sounded bright to my ears. I'm afraid that I may get tired of this sound. But who knows, it may match OK with the 805's for example. Marantz, was not bad but didn't prick up my ears in any way. Ayre was laid back, pretty neutral sound, nice. Bryston, more of a forward presentation than the Ayre, yet seemed equally neutral. I seemed to think this was the best sound for me. I should really try to listen to these again several times but I have a chance to pick up a new Bryston at a good price and time is running out. So, Bryston it will probably be. ;-) But I really appreciate your comments and glad you are happy with your choices.
@Xti16. I mailed James Tanner, VP of Bryston about the voltage concern early last week and he replied back in minutes that, it would no problem to use the Canadian version in Japan which is 100V.
@Toronto416. I read your other posts on the on the L-509u. I think a lot of people really are thankful for the information you shared. Maybe I will try to listen to 509 today if I can.

The Luxman does take time to break in. The unit i listened to have over 2-3 months of run in time. It sounded great.
However, if you like what you heard in the Brystons, by all means- go w/ what the ears like... ymmv

Actually I had opportunity to listen L505, Bryston B100 and
NAD M3 with Harbeth SLH5 speakers at Sound by Singer Store
and even the staff agreed that NAD M3 sounded more dynamic
then L505 and B100.

The Bryston or an Athem 225.

Thanks for all the additional input. Much appreciated.

I just received a follow-up mail from James Tanner at Bryston. Apparently the N.A. version will probably have voltage problems in Japan. The B-100 has a protection circuit that prevents the software from being corrupted. Any voltage below 104V will shut it down. I don't really think I want to go the step-up transformer route for fear of degrading the SQ. So, it looks like I may be taking a closer look at Luxmans and other brands mentioned above.