Different strokes for different folks. I have VV mods and Mech mods. The mech's are great because there's only so many parts in them that can go bad, so they're easy to tinker and fix. I melted the button out of my Roller Clone (#20 referenced above) and just drilled it all out and put a horn button it. But the VV mods are much more reliable, in my practice. My biggest issue with mechs are the unknowns of where the battery is. Maybe I've forgot when the last one was charged and I'm not sure if it's good to go (will it last all day) or if it's already dead. No battery meter is a pain, but there are of course, accessories to remedy that.
The VV (MVPs in my case) are nice, reliable, family cars. They'll get you to Wally World. They'll work when you need them to, but they're basically all the same.
The mechs are hot rods. They're fast, they're shiny (or not), they can produce huge clouds with a sub ohm setup, but they'll break down. You're gonna have to do things to them to get them functioning again. So really, it depends on how much you like to fiddle.