Alot of people reccomend sensor damps as THE EWAR before and after the eventual nerf (you'll have to choose either locking range or time with teh coming nerf).
I personally LOVE tracking disrupters. Sure, they dont effect drones or missles, but the latter is rarely used in pvp and the former is only a mild concern in many group situations.
The disrupters, so long as the ships in the gang stay mobile, can render any ranged turret useless, and really put the hurt on short ranged (blasters, AC's, etc) I personally like them, and only one on a ship can have a HUGE effect, esp. if everyone is hip to what you're doing.
My 2cents.