I've played both, and while the WH-1 does have a bit of a cult following, I don't think the difference justifies paying $500 unless you're specifically chasing that original sound. The WH-1 has a slightly grittier, more characterful tracking that some players prefer, especially for older rock and experimental tones.

The WH-4 is more reliable, easier to find, and works great for most applications. If you're using it for pitch-shifting effects in everyday playing, I'd save the money and go with the WH-4. The audience is very unlikely to notice the difference in a live mix. 1000 games