Probably the same answer you would get from everybody else who is lucky enough to have one: "Like" is a gross understatement. It is just total perfection in every single category of measurement - tonal, ergonomic, mechanical, and cosmetic.
The sixer is actually also a Prima. @Sheldon D. can chime in and correct me if I'm wrong, but my understanding is that it might be the very first Prima he built. It was a total custom job, about 20 or 21 years ago. It was originally going to have the voodoo shape, but the buyer suggested rounding it off a bit and this is what Sheldon came up with. I can't even imagine the amount of hours it took to also figure out putting in the midi pickups and piezo and allowing all of it to be used simultaneously and mixed right from the instrument.