Affordable keyboard with best electric guitar sound

[simplekeys]

Hi,

I'm a lead singer in a four piece rock band looking to get an affordable keyboard with a good electric guitar sound. I'll mostly be playing rhythm parts, and simple ones at that to complement our guitar player. Looking for something easy to use. I played a little keyboard growing up before I became a singer. This may be more of an experiment as I don't know if I'll be able to play while singing, so don't want to spend much money. Any suggestions?

Thanks,
Steve