Recommended RSS Sliders

Can anyone recommend a good recent post slider that works across multisite subdomains (or has RSS support that would span subdomains), external site support, like YouTube, Facebook, Twitter, will grab text AND images, is easy to use and configure, and won’t break the bank?

I know a lot of devs offer a money back guarantee, but the time limit is often prohibitive for me. I’m doing this as a volunteer for a non-profit in my spare (yah, right) time. I’m willing to pay a reasonable amount for something that I know works an just donate it, but I want to KNOW that it works, especially if I can’t complete my testing in the “money back” window.

Thanks in advance for any suggestions or feedback.