Team Fortress 2

People talk about having mains in TF2 all the time, but I want to know - what class have you put the most hours into? What have you put the least hours into? Would you consider the class you put the most hours into your main, or at least one of them? What do you like about your most played class and what do you dislike about your least played class? (Note: you can access your playtime stats by opening your inventory from the main menu and click the "stats" tab at the top.)

My most played class is Pyro. I picked up Pyro right when I started the game, off the advice that it is quite easy to start playing Pyro and so it would be good for a noob - which is true, undeniably, but there's a lot more there if you go looking. I enjoy the support aspects of Pyro; extinguishing flames, spychecking, reflecting projectiles away from teammates, causing enemy Snipers to flinch, and the like. It is undoubtedly satisfying to hold down those two magic keys, (W+M1) and watch enemies melt, and it's equally satisfying to point-blank reflect a rocket with perfect timing to kill the Soldier who got cocky. I would consider Pyro one of my mains, alongside Medic and Spy.

My least played class is Soldier. This one comes as a surprise to a lot of people because rocket jumping is one of the first things people think about when you discuss TF2 mechanics - the truth is, when I first tried this class I lacked the mechanical skill to pull off good jumps, and by the time I had cycled through the rest of the roster I had other classes I liked to play more. There's nothing wrong with Soldier, it's just my playstyle and mentality that has it as my least played. I have at least picked up the skills to jump (I've gone through a Jump Academy course or two), and I'll pick up Soldier if we need some good midrange damage that Pyro can't provide.

I'm curious to see the pairs of most/least played that other people will have. I wonder if there's any correlation?