I've been singing through a SM58, but it lacks the clarity and power to compete with the lead singers Beta 58. My vocals sound ok (somewhat), but when I speak to the crowd it is very muddy (my speaking voice is fairly low). Should I try a Beta 58 as well? Someone suggested an EV RE20; any thoughts on that? I'm not sure that our sound guy is the most competent, so that may be a factor. Your help is appreciated.