If you were to spend $8500-$9500 on a new integrated amp from the following, which would you choose, and more importantly, WHY!!?? McIntosh 8900, Luxman 509ux, or Mark Levinson 5805. Something else? I love my speakers, Focal 1028be, turntable Rega P6 with Exact II MM cartridge, and my CD player Marantz 6006, and don't want to change them out. My current integrated is the Yamaha a-s801. Would one of the "better" amps give better sound? Looking forward to your answers.