I have ridden many H-D big twins & would not even consider a Sportster (but that's me). The BA/SM needs pipes & carb tuning (unless of course you get EFI), & it is well worth the effort. I personally prefer the ergonomics of the SM over the BA, & you get better front brakes & a tach, too. Throw in some foot boards & other accessories of your choice & you'll have a very nice bike that will be a joy to ride. IMO a BA/SM is a much better value for the money spent as compared to a Sporty.