I had a set of FnF's and i had no problems when driving hard on them at a decent height and riding unreasonably slammed. No leaks whatsoever. A friend of mine has had em a couple years without issues as well. I think some of the leaking issues come from the UPS people beating the crap out of the things they deliver.Most shocks leak a little oil after they're made, its the residual thats left over after assembly. Honda-tech= over opinionated pricks that think they're setup is the only one that works.
As for me i've been running GC and Tokico HP for 10 years so i cant say anything about either of the companies mentioned, however i hear alot about the F&F being good.