My own wee publishing house, BeWrite Books, carries some fun and new SF from some first-time authors and several established old hands with more Hugos than you can shake a stick at (
www.bewrite.net). If anything there catches your eye, just drop me a line and I'd be happy to send the ebook/s free of charge as email attachments. I'm afraid we only have PDF versions until we kick in with a full range of formats later this year, but they look and read well on my 505. Cheers. Neil