Hi Hellboy44. I loooooove my Pax ! But not deliriously happy. Firstly let me clarify that i am not a gigging musician as you may understand the term. I play in church black Gospel urban styled music and occassionally produce and write for other artists within the church so i dont gig and i dont do this for money.
The Pax has a great sampler that works just like its supposed to. A great vocal harmoniser that works just like its supposed to . In terms of the dual sequencer, it works just like its supposed to. You can crossfade from one song to the next seamlessley and can load up a new song in sequnecer one whilst sequencer two is still running no problem.
The styles are marvelous and can be adapted and totally reprogrammed to your own taste and saved as a custom style. You can adjust the fullness of the autyo accompaniment with the simple movement of the sliders just below the main screen. I have had the keyboard almost 9 months now and i am only just scratching the surface with it. The only draw backs in my mind are ths korg stock pianos which i dont really like but i joined the Korg forum and downloaded some gorgeous acoustic pianos and have also purchased Sharps "Piano Assault" so that was easily rectified.
I dont use a lot of midis personally but i loaded the Tune 1000 software on my keyboard which has just tonnes of midi files on it and they play just fine. They can all be tweaked but i have never felt the need to as i dont really use themother than to put myself to sleepat night when i am tired of playing the board. I am a yammy fan and my previous arranger was the psr 8000. I looked at the T2 and was very very impressed but for my purposes it would not have been suitable as i do a lot of writing and composing live on the keyboard in a work setting often whilst the choir is rehearsing. I needed an all in one board and the tyros lacked a fully featured sampler and sequencer and the individual sounds could not be deeply edited onboard the keyboard without additional software and a computer and so sadly it was discounted. The Pax has RX technology that is similar to Yammies megavoices so the auto accompaniment i believe matches the T2 however the T2 wins out interms of its outstanding SA voices. They are gorgeous however as an all round great keyboard and specifically for the way i work the PA1X was the most suitable for me.
Everything you have asked for , I know you will find in the PA1Xpro (76 key version) so i have every confidence to recommend it to you.
My one definate critiscim however is the weight . It really is a monster and when i have to play out i gotta tell ya my heart grows faint !!! But even with that i am very glad that i bought it and given the available choices then and even today for me the Korg is still the only suitable choice.