Polk rm6750 or rm10?

[trekdude]

Thanks in advance.

I’m trying to decide between these to Polk speaker systems.

RM10
http://www.polkaudio.com/homeaudio/products/rm10/
No sub, but I’ll get one later

RM6750
http://www.polkaudio.com/homeaudio/products/rm6750/

I need bookshelf/small speakers to fit into my small townhouse.

Both systems about the same price, but I’m trying to decide with is the best option.

Also, I’m saving to get the Onkyo 606, but don’t have it yet.

Any recommendations or thoughts will be a big help.