I just use Ada now. After rebuilding her as a sentry bot (with a robobrain head) she's pretty OP and has a huge carrying capacity.
Gets stuck in small doors but if you just push on for a bit she teleports through most of the time. Worth it for the carry space and weapons (twin gatling lasers, twin cluster bomb launchers, robobrain mesmetron and I also gave her sensors for tracking enemies).
She's indifferent about stealing.