Logitech - G510 / G510s Gaming Keyboard

I have a membrane keyboard that has served me reliably since we first got it. The Logitech G510. I have really enjoyed how large the keyboard is. I haven't really ever used its macro keys, except for within the last few months, when I started using them as "buttons", where I could map them as additional, keyless objects for my flight Sims. I also have really liked that the backlight / illuminated keys are not just (or don't appear to be) clear keys with dark tint, but are rather 2 different plastics, so one is opaque, and the other transparent. I've worn the coloring off of the wrist-rest, but it's the only keyboard, that even after 15 years of heavy daily use, hasn't had the key caps fade, or the lettering wear to nothing. The Home Row locators have gone smooth, but the keys remain lettered. I would like to switch to something mechanical, because the membrane has finally begun to fail (keys are soft on raising back up, will sometimes 'stick' low, sitting beneath the other key caps.) I am sure there's a daily thread or FAQ, but I'd like to replace it woth something that can offer the same longevity, with those main features. A powerful back light, keycaps that won't fade with use, and a large, full keyboard. I don't know a lot about mechanical keyboards, but avoiding something obnoxiously "clicky" would be a plus. A nice detent, but I would like to avoid the tippy-tappy that comes from some key types of mechanical keyboards. (I've gotten used to the feel of Membrane, so something similar to it would be very nice.) Any suggestions for someone such as myself?