Hi Trident.
I own an S910.
to be honest I Would trade it with cash on top for a G70 right now!
The S910 has some great sounds and features but one of the biggest draw backs to me is the keyfeel. This is very subjective to personal preference but I learnt to play on an Upright for years which had proper hammer weight keys and the only thing that satisfys me these days in keyboard/synth land is the Motif XS/XF keybed. (I think the Tyros 2, 3, 4 use the exact same keybed).
It makes a lot of difference to the expressiveness in your playing as well...
The keybed is the one major thing that makes the S910 fee like a toy. it is well built, I don't ever fear that it will break or anything but it just feels very soft and springy...
I have used a G70 only in shops for quick 30 min spurts and the key feel is pretty much on par with the best of the business with the Tyros and Motif keybeds. (I Think the PA 2x is good as well from what ive heard but haven't played one)
Roland has a very good Live sound. when you close your eyes listening to the G70 you can picture the band playing on stage.
Its a shame to me that Roland G70s are SO RARE in Australia. The ones I have seen for sale in shops are priced very high to this day.
I have never seen one sell second hand on ebay in Australia. Maybe this is because they are so sought after or people just don't let them go...
I would jump at that bargain you have found without questions asked...
good luck,
Nick
_________________________
Roland G70 / Roland BK9 / Roland GW8-L / Yamaha Motif XS / Technics KN6500