SitRep is the best perk in the game for anyone that does not sit in a corner without moving for the entire game.
You can see enemy equipment. This is not only a good thing so you don't happen to run into any Claymores, but it actually lets you know where the enemy is. If you see a red flashing claymore in a building, guess where the guy is? Probably in that building. And since you know where the claymore is, it's MUCH easier to enter without notice, and then to kill him. Stun/Flash the claymore and enter.
Manipulation of equipment is VERY important in this game. For example, if I see a guy set up in a building with two claymores covering both entrances, I can set off each one without entering, and then he's stuck there without any protection. Assuming I do get killed, he's only earned one Claymore back with scavenger, meaning that his defenses are still lower than they had been. Also, people panic when both of their claymores go off.
With the pro version of the perk, you can hear EVERYTHING, without hearing ANYTHING your teammates are doing. Some using Ninja Pro may be saying "Yes, but I can hear everything because I'm so much quieter myself." To that, I say "I don't have to try to filter my teammate's sounds, and I only have to focus on my those of my enemies." SitRep Pro makes all your teammates sound as though they have Ninja Pro, and it cancels out enemy Ninja Pros. Meaning that if you hear anything louder than the Ninja Pro footstep, an enemy is near.
And the amount of sound whoring you can do with SitRep pro with a good headset is INSANE. It's like a mini-UAV inside your head. With good experience on maps, you can call out enemy positions just based on the sound their footsteps are making. Take Storm, for example. If I'm sitting inside the main building, and I hear footsteps on metal, I can instantly assume that the enemy is on one of those metal platforms, either outside near the manikin shop, or inside against the wall. Or, say on Bailout, if I'm near the building that borders the parking lot at the bottom of the hill, and I hear footsteps on wood, the enemy is inside the building. If I hear them on concrete, the enemy is outside. If I hear them behind me, then spawns got ****ed up, but I can save myself based on that information.
SitRep is the BEST perk for a rushing class, for all the reasons listed above. I typically run the majority of my classes these days with Marathon/2nd perk/SitRep. Marathon Pro, combined with SitRep Pro, allow you to abuse the **** out of your mobility, so you can get around equipment, escape nasty situations, change positions easily, etc.
The one weakness SitRep has, is being vulnerable to Heartbeat Sensors, but those aren't too common, and even then you can typically abuse those using a Rush Class. I still happen to have one or two classes with Ninja on them just for that, though.
Also, when two people with SitRep Pro get into a fight, it's the funniest thing ever, because they're both sound whoring each other to death. It's so hard to do. XD
I might of missed something, but those are the main things I love about SitRep Prooooooooo.
