OpenBSD/FreeBSD desktops:I prefer urxvt on *ix systems. Terminator is weird IMO. (But I'll surely try Final Term soon!) "Multi-terminal needs" can easily be solved with tmux.
In the very rare cases I want to use more than one terminal X window, I just press a hotkey and a second one opens. Thank you, awesome wm!
OSX:This is a hard case. I have to work with OSX in the office. Terminal.app makes me sick. I installed iTerm2 as it has a nicer handling but it sometimes freezes when my ssh is connected too long. Rather annoying. I plan to replace iTerm2 by the Emacs shell next week (
M-x shell) as I use Emacs with TRAMP for most "real" working tasks anyway.
Windows:Easy. ConEmu with a PyCmd interpreter. Beat that.