2 More cents worth -
After my original pre-purchase search in 2004 and the near 20,000 miles that followed, I have come to the conclusion that;
1. Out of the crate - The SM/BA seat (Rider's portion)is as comfortable as, if not more comfortable than as any other 'CRUISER'
2. The typical 'CRUISER' is NOT designed foremost as a long distance bike.
3. Most any 'comfort oriented' seat (Corbin seems to get top billing) will extend the long distance comfort (This info I gather second hand).
4. Attainable Distance is directly inter-related to many factors which include, fit of rider to bike, health and fittness of the rider, willingness to stop and stretch and a myriad of other factors.
5. Serious tourers (long distance-minimal stops) should consider serious touring bikes.
6. I've logged many 8+ hour days on my SM and covered in excess of 250 miles on some. The only times I've felt extreem discomfort have been times I failed to stop at regular intervals.