I haven't seen any screamin eagle's sitting around at dealers unless they are trying to get over msrp.Most are pre sold or sold within days of arrival.My dealer is the largest selling in the SE US and they never last more than a week. In fact,a SE Springer just sold on ebay used for more than what I paid new.
Most problems seem to be with Ultras.My buddy had his motor replace on his non SE 96" ultra at 5000 miles,and others I know had engine failures on older models than that.Lets face it,Harley has never had a reputation for reliability,which is why I bought an extended warranty for the first time on anything in my life.Never seems to effect their sales though.