cheers, a couple of small addendums. you seem pretty down on the AP, but it's probably worth noting that (if you are carrying one at the time) it's an effective anti-disruptor. AP can instantly adjust to reversed steering.
personally I think the pure AP is a worthwhile item, it's simply a matter of correctly choosing when to use it
also worth noting that the shield acts as a reflector against the disruptor. it's possible for someone to bone themselves by shooting a shielded opponent with a disruptor