subwoofer crossover- lowest is best almost always?

In my experiences with subwoofers, I have found that lowest setting has always given me the least colored bass response as well as the tightest.  I have found in almost all cases that anything remotely close to crossing over at the speaker frequency seems to overblow the bass almost every time and have a negative effect on the overall sound most noticible with digital.  It seems that any other setting is just trying to compensate resulting in sound that does not sound right. Albeit some may think that systems that do not crank the subwoofer as being thin sounding. Well, I think that depends ultimately on placement and setup of speakers and sub.  Just curious to what others think.