I'm trying to decide between the two for Christmas, but I don't really have any sort of preference. I know it's very difficult to compare an envelope filter to a phaser; however, I would like to know your opinion on which pedal to get. Also, If you have had both pedals, which one did you enjoy more? I play progressive/experimental rock (Tool, Radiohead, The Mars Volta, Led Zeppelin...), but also do a lot of improv and enjoy making bass parts using effects. I really don't need either pedal, but they both seem really cool. Any feedback would be deliciously appreciated.