I am in total agreement with Roscoeiii. I would first choose speakers that sound great, work well in your room's size, and meet your budget. Then you can look for an amplifier that will make them *sing* and meet your aesthetic requirements.
I actually have owned a Leben CS600 for over three years now -- paired with DeVore Super 8's. Good synergy with the DeVores, and I actually preferred it over the Leben CS300, which I found to be too bright for my taste. One advantage with the CS600, if you're so inclined, is the ability to do some tube rolling for tailoring its sound. After one of the stock Sovtek 5881 tubes failed, I switched to Winged C 6L6GC's and have been very happy with the sound. Of course, it is best to let your own ears determine what is right for you.
Also, remember that if you plan on playing LPs, you will need a separate phono stage. One advantage of the Luxman is the built-in phono stage and remote control (if that's important to you). And you can also roll tubes in the Luxman to tailor its sound. Just a thought.
Good luck to you in your quest.