Nothing is more important for your live show than having clear vocal output. Fortunately for you, there are countless microphones that are of solid quality. But I assume you want something better than “solid” for your voice, right?! I've tested the Sennheiser e835 head to head with the industry standard Shure SM58. This Sennheiser e835 Review tells you what I found.
The first thing I heard was what I would call crispness. The Shure altered my ton slightly. So whereas my voice usually has a brighter low end, the Shure SM58 gave me a bassier low end. The Sennheiser e835 came through crystal clear. I guess you could say it popped more. If I hadn't done a head to head, I probably would have though the SM58 was pretty darn awesome. However, when you have the mics side by side, there's no doubt which mic delivers your tone in a more true manner.
A second thing that I appreciate in the e835 is the lower chance for feedback. Despite having the same cardiod pattern, the e835 definitely has less feedback than the SM58. This has been the case both in rehearsal space and on-stage for live performance. For example, there have been times when I've had no choice but to have the monitors off to the side. I've rarely had problems with feedback with the e835 in this situation whereas the SM58 is much more sensitive. For best performance on both though, I recommend putting the monitor directly in front of you.
Third is the numerous angles the Sennheiser picks up my voice/saxophone compared to the Shure. I can go off 45 degrees on either side, hang out 6 inches in front or even have the sound coming in from below. In my experience, the SM58 requires close proximity on the center of the mic at all times if I want to be heard.
A fourth and last aspect I enjoy is purely aesthetic, but isn't that half the battle between products (or in many cases, the entire battle)? I like the sleekness of the e835. Unlike the straight cone of the SM58, the Sennheiser e835 has a curved cone that fits my hand better. The microphone capsule is also more eye-catching. The SM58 looks dated with its tennis ball shape, almost like one of those planetarium star projectors. The Sennheiser e835 has a rectangular shape that's modern in taste. But like they say, looks aren't everything… until you're putting money on the table.