Most of the pens out there use the Space Pen insert which I find to write like pointy dog shit. I spent a fair amount of time finding an insert I liked and that wound up being the Pilot Hi-Tec C. I then found a machined body that looked decent and that's where I've been for a few years now.
I have a pair of the stainless bodies from Big I Design and they're beastly but most importantly they are the pen I wanted for writing. It's not nearly as cool for pocket dump pics but fuck that noise, I write a ton and this serves that purpose well. Looking at the site the click pens are in stock now too, I'll grab a set and see how they work. The best part about them is they don't look like they're sold in the back of Soldier of Fortune.