For me I've always been drawn to the 24-70 2.8 lenses. I think the 2.8 (all the way through) is enough to get a pretty good shallow depth of field that really helps separate your subject from the background. With 24mm you get just enough wide-angle without fisheye distortion. With the 70 you can kinda zoom in on stuff, but also get really good portraits of people with it. I think lenses with a wider range, don't tend to be as fast, or if they are as fast they are really expensive. It's sorta a sweet spot between speed, cost, and range and off-brand manufacturers make really good quality lenses like Tamron and Sigma. The only downside to me is that the lenses tend to be really heavy. I recently switched from the NIkon 750 which was a full frame to the Panasonic GH5 which is m4/3 and mirroless. I got the equivalent native lens (18-35 2.8) and it is sooooo small and light (yay mirrorless) AND I get both lens and body stabilization.