I've been trying to buy a Sequerra Broadcast Standard (from 1998, the last production model with panalyzer, as opposed to the upgrades) for a very long time, with no luck. I suspect it's the best tuner ever made, but with no reviews and none available...
For a tuner one can actually purchase, the Accuphase T-109V is my favorite, and it's the one I use the most.
The problem here is that I think what you want to know is what's the best tuner for YOUR system, implying that it should be in similar price range, etc. The answers you're getting are about the BEST tuner, regardless of price or any other factor.