I've been using WP Super Cache, but over the past year this website has grown both larger and more image-heavy and I'm need of more effective ways to speed up loadtime.

Is anyone using CDN Tools and/or W3 Total Cache with Atahualpa?

I've read high praise of both plugins on WP blogs, but I'd love to hear whether/how well either of these plugins have worked for you.

Thanks!

http://theagnonschool.org/
WP 3.0.1
Atahualpa 3.5.3

I used WPSC on a shared server, which worked fine. I am now using W3TC on a dedicated server, which works even better. I have also tested Amazon Cloudfront as my CDN, and it appeared to work fine, but I'm currently not using the CDN, just W3TC without CDN.

Okay, good to know. I think I'll take the leap.