The Webers are fine on the street once setup correctly, I think the negative press is from people who buy as set, bolt them on and expect hem to work out of the box. They will not and require a lot of initial tuning to your particular engine setup.
I suggest to buy one of the Weber Tuning Manuals and read thoroughly, this website also offers some good advice for free;
http://www.timsroadster.com/html/tuning_webers.html
Julian
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