dear list: which is best for some one who wants true pitch modulation (tremolo) the digitech whammy pedal,the vibratrem or the bos pitch shift pedal? price is not that much of a factor -- Join the most exciting community of women on the web! iVillage.com's FREE membership gets you private email, your own home page, special discounts and sweepstakes, and dozens of problem-solving tools. http://www.ivillage.com/frame/join_email.html