I wouldn't buy any of them but that is not to say you shouldn't. If you are gigging with it I do question the longevity of mechanics inside these with the least worthy being the Casios, IMO. The Korgs might be worth while but it matters how you connect up your sound and how it goes FOH. For instance as I recall the SP170 hase no 1/4" TRS out. It matters if you will use internal sounds or virtual sounds via mixer or programs. Will you use midi ?
Thanks for the reply! We've been using a 3.5mm to 1/4" cable for our current keyboard.No, we will not be using midi.
With that in mind then internal sound matters. I assume you are running through a mixer, does it have EQ capability ? The SP250 has two 1/4" out ports as I recall but I don't believe it has on board EQ. Where are getting an SP 250 from anyway, it's been out of production for some time ?
Thanks all. I ended up getting a used PX130 for $275.