Dunlop Dimebag. The Bud wah was good, but had same issue I have with many wah pedals, I didn't like it on the neck position pickup. The Dimebag wah is outstanding, sounds great in the neck, and gives you control over the optional solo/gain boost. Next to that is the RMC Wizard, Dunlop Cantrell & EVH & Bonamassa, and finally the Fulltone Clyde standard.
I had an old Budda Wah and it was great but it started to have problems, after testing a few wahs I settled on the Mission Rewah pro which has a combination to mimic the Budda Wah.
I had an old Bud wah as well that I dug a lot. I really didn’t find anything else that I really liked again until I started building them myself. I have exact control over the sweep and tonal range and I control the quality by building them like tanks. Here’s my main player and three I’m working on now: