I've been using 58's for as long as I can remember. They are arguably the standard for vocal mics. The church I currently work at bought the ones with the on/off switch and I'm not noticing any difference in tone from other ones I've used. My personal 58 is a 20 year old model that a dude gave me 5 or 6 years ago without an on/off. I switched out the mesh grill so I didn't have to smell that dude's breath. I use it for home recording/demo creation and independent gigs. The paint is chipping off and it is my oldest piece of equipment but has never disappointed.