Super Goats only come in a 193, in limited runs. Billy Goats are available in 189 though.
Any ski with RES (BG, SG, CD) is going to feel loose. At the same time, each of the skis you mentioned, including the 189 BG, is going to have more of a backbone than your old Squads.
The W114 likes to be skied aggressively (forward), but its subtle tail rocker allows the (presumably good) skier to break it loose in tight terrain and/or slow-medium speeds.
With all that being said, the 189 BG is the "closest", although completely different, to your current setup.