I'm toying with the idea of taking a keyboard to gigs in the future and am looking for some suggestions. It would be just to play on a few tunes and mostly just to fillin chords rather than to play lots of solos.

I am not a keyboard player so it would be just for some basic stuff (think Linda McCartney and Wings perhaps!).

There is a person selling a 1970s Hammond organ at the moment locally for £75 but I would guess that it is going to be totally impractical as it is probably huge and heavy for me to cart about with all the other stuff.

So what I am after are some suggestions of what would sound ok through a PA or amp and is going to be portable and relatively small with the ability to make a decent organ sound and probably a piano sound as well.

For example is something like this - Casio - completely inappropriate? It's cheap and simple but would it sound like a pile of poo?