For my new cover band band I want a synth bass pedal so I can better emulate some of the keyboard bass on the original version. What I am going for would be fat, greasy vintage sound, and currently I can get good deals on both of the Boss pedals locally so I was wondering which one would be best suited for my needs. Currently we do this one: http://www.youtube.com/watch?v=vItrOTCp1RA and from :25 on you can clearly hear the synthy bass sound. I want that Next up is Material Girl which I could do without a synth, but maybe it would be cool with one and later we are gonna do Just an Illusion for which it would be essential. Any input would be much appreciated - I haven't owned a synth pedal before. Suggestions beside the Boss'es are also welcome.