I had tried it briefly previously but in the last couple months I think I have made the permanent switch from iterm2. It's so much snappier and simpler and also reliably handles text reflowing when a long line wraps, which was a constant problem I had in iterm2, where it would insert fake newlines when copying out text that was wrapped.

I also like that I can have my config in a little plaintext file and just drop it onto a new computer and get the same keybindings. I am using the terminator keybindings for creating and navigating between split panes.