I'm likely still in the honeymoon phase, but I'm still thrilled with the tone and playability of my WL-4.de. I have Dunlop stainless flats on it and I'm loving the tones. Killer, all around. Essentially switching between bridge and neck equal and neck full on. That's getting close enough to a P bass sound, that I'm happy. Then I have the mid boost set to give a little more mid and enhance the "Precision" tone. I swapped out the tuners for US Hipshots and added a d-tuner, added Dunlop straplocks and a bell cover for the neck pickup. Yeah, I'm going to have to get a NYC. It's inevitable.
Don't the Will Lee 4's come with a D-tuner? My Japanese Metro did.