A further addition:

I had purchased a Korg Triton-Pro Music workstation. I liked it but it did not suit me as it didn't have any preset styles. So even if I had to play a small song(live performance), I had to record the beats and chords.

I then purchased a Yamaha PSR-740. I liked it but the sound quality and sound banks are not as good as Korg.

I am still in a fix weather to purchase the Korg PA-80 or the Yamaha PSR-9000.

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Sri