Electro-Voice - RE38N/D

It's hard to second guess this, so you'll need to carefully apply any advice to your specific situation..... Some artistic mix choices in your genre intentionally 'bury the vocals' in the mix. It's possible your sound tech is choosing that route, when you want vocals on top of the mix. Talk to him/her to make sure you're on the same page about your artistic vision of the presentation. You don't mention how the videos you've watched were recorded. Is the audio from the video recorder's microphone? If so, is the recorder in a representative part of the audience space? If the recorder is tucked outside of the PA coverage position, or dead center right in front of the stage, the sound it recorded may not be representative of the sound in most of the room. Since vocals are produced ONLY by the PA, and drums/bass/guitars may come primarily from stage volume, the difference from the positioning of the recorder can be extreme. See if you can record only your vocal mic for a show, or have the sound tech cue it up regularly in headphones and listen to it. If during loud parts of songs, the vocal mic signal is predominately drum/guitar/bass bleed, the only realistic way to address this is by lowering the stage volume of those elements. (And/or change your vocal style to increase SPL and/or tonal balance.) An SM58 is the most popular choice of vocal mics because it works pretty well for most voices and situations. It doesn't mean it's always the best choice. In typical use, the SM58 has a very scooped-out response in the 1kHz-3kHz region. If your voice needs that range to sound 'present' in the mix, switching to a mic that's effectively flatter across the vocal mid-band may indeed help. I'll also note that the SM58 suffers from really nasty-sounding 'bleed'. (Not bleed level necessary, but the audio quality of the bleed.) Some other mic options have more coherent sounding bleed. If you can borrow one to try, the Electro-Voice N/D series vocal mics address both the tonal balance and bleed coherency issues quite well. (I'm sure there are other good options-- I'm just familiar with the EV's, and it's the mic I keep in my kit to address these issues with a band/vocalist when I need to for a gig.)