I can provide some info based on my interview experiences and some anecdotal info from friends. Cali programs are competitive in general due to location and limitation of spots, and like NYC programs, they seem to have a regional bias which makes it tougher for those without a Cali connection.
Cedars- Heavy clinical volume all around but also research oriented, friends there are more academically inclined. Bunch of former UCLA staff and competitive to get into.
UW- Weaker in nuclear and ct/mri, but large LVAD volume. Spread out over 3 hospitals, occasionally have to cover interns and fairly research focused. Cath seemed ok though seems like some fellows go elsewhere for advanced training, not sure if thats for personal or other reasons.
UCLA- Seemed like a nice and balanced program, both clinically and academically, not super high volume but good enough all around. Though it seems some fellows go elsewhere for interventional training as well. Beautiful main hospital, spread out over 3-4 hospitals. However, they were pretty vague on clinical volume and curriculum and it seems everyone has different impressions on the program's research expectations.
UCSD- Seemed like they're trying to improve their research cred, lots of new buildings and growth and pushed research on interview day. Clinically, seems like you'll get to see a little of everything, nothing particularly stood out.
UCSF/Stanford- More academic focus and not particularly high volume
Don't know anything about other programs, but don't discount them, wouldn't be surprised if they were just as good if not better (at least in some aspects) than some of the above programs.
The West coast is great, but I felt that there were lots of programs elsewhere that offered just as good or sometimes better training, and from what I've seen, it's very possible to land great jobs on the west coast after training elsewhere. In fact, some programs are setup such that you could probably fly to California every other weekend and still come out ahead financially. For now, apply broadly, do as many interviews as possible to see what YOU think of it, not what someone else thinks, and definitely keep an open mind, you may be surprised at what programs you end up liking/disliking, I certainly was.