It's amazing how so many vapers treat anything more than 5 years old as some sort of ancient relic. More like a year in the case of regulated mods. Although I must admit that my Provari's are much less useful than they once were.
On the left is a mod that I acquired recently and love dearly. In the era of 22mm tubes, there weren't a whole bunch of contoured mechs. This one is exquisite, from CV1 in California. The "Virtus", the only mod they ever produced, as far as I can tell. It's an amazing example of the machinist's work. Steel on brass threads are just about the smoothest I've ever felt. The voltage drop is respectable, under 200mV. But everything is just so smooth. Amazing copper fire button. Beautiful mod, wearing a NarTa clone from Coppervape.
On the right is a Pyra, from RNV Designs in Indonesia. A more recent mod, also very well made. No CNC machine ever got anywhere near this piece of metal. All handwork, with a voltage drop of just about 100mV. The splattered vinyl heatshrink is amazingly tough. Very nice, and reasonably priced, too. Wearing a Kanger Aite Tank, another great single coil RDTA.