So, IG88 B is wonderful, built in gunner. Usually when there is a system upgrade slot and you have gunner FCS is almost a no brainier, take a focus, hope you roll poorly enough for the other guy to dodge, get a target lock and deal up some damage.
I'm also using PTL with some much green it would be a shame not to.
I'm really tempted to use the Advanced sensors to pull off some some boosted S loops.
Anyways I'm currently rolling with
IG88 B Mangler, Ion, AT, PTL, FCS, Title (50)
IG88 C (Same) (50)