Best Linux (or BSD) hosted BGP?

I know best subjective, but I'm looking at a project to announce some IP space that's between uses now and see what's there. I'm planing to run a flow logger and ntop on the VM and see what is coming in if anything. I'm looking at the options for BGP out there, and there's quite a few (other than running a VM with a router doing BGP), but most data I've seen is focused on scale and filtering use, or RPKI. My use case is a bit different, and I can't find any best practices for this use case from what I've found. That said, is there a better solution other than linux/ntop/ipt-netflow? -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net