http proxy with anto-virus protection

[Tomoki Taniguchi]

I am considering setting up a http proxy server that will filter virus content.
doing search in the repository and web, i currently see 3 possibilities.
1) havp
2) DansGuardian
3) SquidClamAV

the first 2 i can install using apt and the third is not in the repository.

I was wondering if there is one the people recommend over the others?

TIA,
Tomoki Taniguchi