Everyeon always trots out that line about "bigger things to worry about," but it's not necessarily true. The "Medium One" (Northridge) shattered glass tanks (or more likely, they slid off the stand) while most acrylic tanks were left standing.
In a big quake -- Eric, those are VERY rare -- yeah, almost all the tanks are going down. Tank survivability aside, the LAST thing you want is shattered glass on the floor in the dark. Especially if you have kids or pets or you need to pack up and evacuate in a hurry.
Eric, get the official California earthquake preparedness kit, prep your house, make appropriate emergency kits for home, car and office, have a plan for you, family and pets, and then forget about it except for an annual inspection and review. Quakes worth noticing hardly ever happen and there's no point stressing over it. Just be prepared.
WeHo is pretty expensive. West LA is cheaper but not as nice overall. There are some very nice parts of West LA, though, and reasonably priced housing is still available if you look hard enough. Many small 4-6 unit post-war buildings are family owned, the mortgage long since paid off and manager is a family member in unit 1, so rent is reasonable and they tend to be better kept up. You won't see then advertised, though, you just have to drive around and look for the signs.