For the shooting I do, I don’t have use for a duplex - not enough information to let me do what I need to do. Unfortunately, most handgun scopes are only available in duplex, so I do own a lot of them. I lump the #4’s in here as well. Most of the time, if I’m shooting short enough such I don’t need any hold over information in the reticle, then I know I don’t need a telescopic sight at all, in favor of a red dot sight. If there’s a chance of longer range shooting, then I want information in my reticle.
Most folks who read my posts on any given forum will know my (low) opinion of BDC reticles. The asymmetric subtensions make them less useful than a regularly graduated reticle. The usage is backwards - the shooter doesn’t know the trajectory, they know the ranges represented by the stadia, such they think about shots in terms of range instead of trajectory. What is a spotter supposed to call for a shooter with a BDC? When you’re shooting a milling or “moa-ing” reticle, you hold mils or moa, and your spotter calls corrections in mils or moa. With a BDC, they would have to call inches, but the shooter has no reference for what an inch might be, other than estimation based on the target itself. It’s a much slower, more cumbersome system. If my first circle is at 129 yards and my second circle is at 247yards, what is my hold when my rangefinder pings a prairie dog at 184yrds?
So you might guess, I voted mil-dot. Of course, using mil-dot to represent all regularly graduated mil or moa based “ranging” reticles. I like to have Christmas trees at least, but a lot of my scopes do only have stadia on the main crosshairs. The TReMoR and Horus reticles are a LOT to look at, but it doesn’t take long to get used to them. If I could have a Christmas tree on every scope I own, I would. Unfortunately they just aren’t all available.