I started cookin ribs with the 3-2-1 and (as has been mentioned here) I kept over cooking them. In fact, by the end of the "2" part, they were typically alread overdone and falling apart.
SO....I don't foil anymore. 3-4 hours at about 250-275, sparaying with 50%-50% mix of apple juice and apple cider vinegar about every hour, then finish them with sauce/glaze for the last 10 minutes. YUM!!!
BUT....as has also been suggested, it's all about YOU and your preferences. That's just what works for me. Truth be told, the wife and kids love them no matter what......I'M the picky one.