I also prefer using the terminal, but I've switched to neovim anyway. I found macvim to be difficult to configure and I just prefer having tmux terminal splits next to my vim split and I can see stuff happening as I edit the file. I also prefer iTerm2 to Terminal.app but I think it's just personal preference. I know how to use the iTerm2 settings pretty well by now to get configurations I want.

For me it's definitely mouse reporting. If my hand is already on the mouse I really like clicking tmux panes. Sometimes it's also easier to just scroll with a trackpad too.

iTerm lets you do this, but Terminal.app doesn't.

iTerm 2 has way more options than Terminal.app, my favorite being the ability to set your color scheme.

The killer feature for me is Hotkey Windows - I set it up so that pressing Ctrl+Space from anywhere will slide out a terminal. So convenient.

http://apple.stackexchange.com/questions/48796/iterm-as-a-sl...

To be fair, you can do the same for iTerm (or any application, really) by using other tools. Quicksilver, for instance, allows you to define system-wide hotkeys.

Terminal.app has had color schemes since forever.