First, let me say that I did what you're now doing when I had the ProntoPro (I now have the RC9200, like you). And you're right, it works great.
I had six cover arts per page, and used the cover art as the button macro to select each disc. The very nice thing about the Pioneer was that the macro would work from any position.
I don't have the DV-F727 any longer. But my memory may just be fading in that I knew I couldn't daisy chain two players (because I wanted component video for each). I may have just merged the digital audio issue into it, because they couldn't be daisy chained effectively in my system.
The Kenwood player can be modified for region free use. Go to
www.jvb.nl Of course, the Pioneer can be sent to that organization for modification as well, since I had one that was modified.
Ergonomically, the Pioneer still performs the best, but its picture quality will be behind the Kenwood's (audio would be equal), and, of course, the Kenwood is a 400 disc player (the Pioneer is only 300). There are macro commands to do with the Kenwood what you are doing with the Pioneer, but the user interface, surprisingly, is still better with the Pioneer.
I have to believe that you will find a nearly comparable deal on the Kenwood DV-5050M, which retails at $799. Street price will be much less than that. Of course, if you want to step up to the DV-5900M (Faroudja processing chip, DVD-Audio capable), the retail has just dropped to $1199, so figure on something less than that. The progressive scan chip in the DV-5050M is supposed to be very good too, though not Faroudja (although I own one of each, I use them through their interlaced outputs, feeding them into a Faroudja NRS at 720p).
But the daisy chaining would turn the tide in favor of the Kenwood, for me. You don't have to worry about the issue of multiple component video inputs, or multiple digital audio inputs--all you need is one of each in your a/v preamp, and you can go as high as 1200 discs, all with one remote. That, I assure you, will prove to be a formidable advantage in the end. I know because I've been there.
Nick