Are there benefits to having two squid proxy servers?

[belikeyeshua]

Here's my thinking:

Caching smaller files makes for a faster internet experience, while caching large files makes for a slower internet experience yet you save lots on bandwidth.

Suppose if you had one server running for smaller files and then somehow any files that were larger than what it would accept gets forwarded to server #2, where that server caches it. My question is, would this setup be better than having one computer that was setup to cache youtubes and such? Or is it not worth the time and money?