So I've been looking around for different Envalope filters, and I've found two different Electro Harmonix filters, the Bass Balls and the mini Q-Tron filter. Both are in reasonable price range for me, and I was wondering if there's any huge difference in sound? Which has more tonal variation possibilities? The tone I want is basicly the same tone Mike Gordon from Phish gets out of his EF effect lines. Which one would work best for me?