I like the bf-3 too. The gate/chop setting is very cool. I had an old Ibanez swell flanger, not sure of the model number, and I found the volume variations to be off-putting (the "swell" in swell flanger) and also when on the quiet part of the cycle it seemed to lose bass, although maybe that was just a volume thing. The swell flanger kills on guitar though, and other than the volume variation bugging me it was a good pronounced deep flange with lots of color and whoosh. I feel like the boss is a solid utility pedal, some of the boutique ones might cop some better ecsoteric tones, maybe more distinctive, but the boss works very well for me. It does have a slight volume boost when engaged, but I find that to be useful, although for others it makes the bf-3 unusable.