You don't say much about your priorities, but it sounds like compression time for large files is your main priority?
This claims to be suited to that case (see the -l flag):
http://manpages.ubuntu.com/manpages/lucid/man1/lrzip.1.html
On the other end of the tradeoff (high compression ratio, long compression time), some notable software distributions have started using this recently:
https://en.wikipedia.org/wiki/Xz
Re benchmarking: why not run some quick tests youself? Benchmarks are often misleading because results can vary a lot depending on the precise workload and test conditions. Still, here's a report in German (try google translate) about somebody else's benchmarking: