I live in Torrance, tucked in nicely between FS3 and the SouthBay Galleria mall. I have a BC396XT and I have no idea how I ever lived without it.
I think really what you have to ask yourself is what you're interested in listening to. There's a TON of different things that can be monitored from the South Bay, dozens of local law enforcement agencies, a number of different fire departments, CHP, two major airports, rail and bus lines, etc. LAPD is digital, which means you're going to need to shell out a few $$ more to get a scanner capable of scanning digital. LAPD though, is fun to listen to.
I work in news, so I need the capacity and flexibility of the 396XT. I have just about 4,000 channels in my scanner, a lot of it simply contingency stuff. Last week we were sent to Kern County for a breaking news story, and I have *all* of Kern County in there already. That's also the beauty of a scanner like the 396XT. I have hundreds of channels programmed that I rarely need, but they're there when I do. (Heading to Nellis AFB next week for a story, and I already have all of Nellis' frequencies and the surrounding Vegas valley stored in the scanner)
And with the ARC-XT software and the Radio Reference database, I can program things I may need in literally a matter of minutes.
But it's EXPENSIVE. I got mine at Burbank Ham Radio Outlet a couple of years ago for $650. I looked at it like this: My last scanner lasted 20 years. It's actually still working, but since a lot of what I listen to for work is digital, it forced my hand to go with the 396XT. I'm hoping I get a pretty good run out of the 396XT, so the cost over the long run, won't be a problem.
And as some people have said, the learning curve for this type of scanner is STEEP. We have gotten a few more at work, both the handheld and the desktop versions. I've been tasked with not only setting them up, but teaching people how to use them. I get a lot of calls from our guys asking "OK, how do I do this again?" You may actually have an advantage coming in with no scanner experience.