I'M AN OWNER OF AN YAMAHA ARRANGER AND AN OLD KORG i5s. I don't know about you guys, but I do prefer Korg arrangers over those of Yamaha. Since the unveiling of the new Korg PA1X series, both come in 61 and 76 keys, one with integrated speaker system, the other one pro version without speakers, I've had the chance of playing with one and recording it in my home studio. I gotta tell you Korg has surpassed Yamaha by doing an excellent job designing not only the hardware itself, but the software and the sounds coming from their arrangers. The drum samples can actually fool you by thinking someone is actually playing a live acoustic drum. The features surpass those of the Tyros. The bass guitar samples do not sound as if they are being looped at all over and over. All in all, Korg engineers have done a super job in sampling their instruments note by note into their machines and fine-tuning those samples by sand-papering them to give you that realistic experience as if you're listening to a live band playing. The PA1X series incorporates such RX (REAL EXPERIENCE) technology, as called Mega Voices in the Yamaha Tyros, that can ultimately take your breath away!! Currently I own a PSR9000, which after playing with the PA1X starts to sound more like a toy to me than an arranger. I gotta confess though that the Tyros boasts a handsome hardware design. I like the flip-up screen, the light-up neon buttons, but the sounds do not impress me at all. The PA1X offers optional CD-R/RW drive and boasts a touch-sensitive screen as well as an XLR input and a choice of FX expansion to include the famous Antares auto-tune and mic modeling technology and a herd of other FX. This is almost a Triton Studio in an arranger keyboard!! I'm hoping in the future they'll come out with a cutting edge keyboard which can perform as both an arranger and a pro syth workstation such as the new Korg Oasys. Do you think they will ever employ this type of wishful thinking? Because if they ever do, I'm hoping they'll build one in my lifetime. I say build such machine and make sure you incorporate a 24-track recording workstation, built right on board!! AHAHAHA!!