A lot of guys use RSRD with TMO but I personally don't, just doesn't suit the way I play the game. It's a great mod if you want to catch all the big
battles but if you like doing the patrols that are assigned to you it leaves something to be desired, much prefer TMO's traffic.
Optical Targeting Correction by CapnScurvy is the way to go if you're into manual targeting.
Check out this thread to get some idea of some of the options of OTC. There is a lot more to it than this.
http://www.subsim.com/radioroom/showthread.php?t=207037
Magic