The problem isn't Tazers vs gun or venom, its the post Rodney King neutering of the police. Prior to King everybody on the street knew if you gave cops trouble you might get a beat down as well as being arrested. Cops were good at giving a beat down, very few people died as a result of one or even had that much trouble walking within a few months, but very few people would give cops trouble, let alone attack a cop.
Now we have PC cops and the danger to both cops and those being arrested has vastly increased, as well as the number of police required to do a less effective job. Typical Liberal policy, looks good on paper, stinks in practice.