FWIW, I never had a problem with Firestone's lifetime alignment service, but then again it's not like I tried to bring it in every other week, either. Myabe twice a year, and whenever I got new tires. My truck also wan't lifted, so that wasn't an issue. I probably did pay $159 or $169 for it, so it was definitely pricier than what you found at Courtesy, but then again 37th and El Cajon is pretty out of the way for me, and I would usually have mine done right down the street from where I work in Rancho Bernardo. Might have even had it checked once while visiting Dad in CO. Nice knowing you can pretty much take it anywhere in the country.
I need to see if alignments are covered in the maintenace package I got with my new X. If not, I'll probably hit Firestone up again.
I haven't always been entirely happy with Firestone's work, but the alignements always seemed to get done right.