Did my 10k service at Westside today. My 5k was at Sterling McCall. Similar experience at both (I did not have someone pick up my car) and waited in the lobby both times. For brake and hood flutter issues Westside acknowledged issue and I'm on the waiting list for parts with no ETA.
10k was complimentary (oil, filter, tire rotation) and was my 5k (oil filter only). I did notice on my receipt that Westside chipped my car with some sort of recognition device so that they would "better recognize me" at my next visit. Had I been asked about that before I would have declined - under no illusions that big brother is watching or anything, but why do they really need to do that? I'm going to see if I can find that and remove it.
Anyway overall I see no big difference personally, but Westside is marginally closer to me. I'll probably stick with them through warranty period then find a good independent shop closer to me.