Marck, thanks so much for this post. I was dreading today because I have to play a brief 'blessing the animals' service tonight on the church steps. I no longer have a keyboard with speakers except for an older Yamaha PSR 1xx that I keep in the choir loft for emergencies. I've debated about bringing my G70 and an amp or finding a way to skate the digital piano from inside the sanctuary out to the front steps.
Now I've decided that the PSR will do just fine. There are two or three sounds that are decent enough for accompaniment and the people out there will not really be listening or watching a concert - heck, I'm not even going to play for more than 5 minutes. I will use my talent and knowledge to make the best sound I can with the keyboard I have AND I'll save myself lots of money and worry. And to think this is one of the reasons I was thinking of selling the G70 - portability and speakers. Maybe there's another solution