BEST: pretty much anything I've replaced or added... Corbin DualTour flamed leather seat with rider and passenger backrests, Long Rider 6" smoked recurve windshield, Drago's Bike Works S/C/S-4 2-1 exhaust, Andrews 54H cams, Wild 1 Chubbys 575 bars, TTS, Cometic .030" MLS head gaskets, Traxxion Dynamics AK-20 Cartridge Forks, Chrome Front Brake Calipers, Road Tech 665 with XM, Auxiliary Lamps, Color-matched Tour Pak, Paul Yaffe curved license plate frame, etc etc etc...
Worst: H-D stock 2012 SESG seat (the FIRST thing I got rid of), H-D stock exhaust (the SECOND thing I got rid of - first with a Fullsac X-Pipe, and recently with the Drago's S/C/S-4), H-D stock SE255 cams (the THIRD thing I got rid of), H-D stock windshield (the FOURTH thing I got rid of), H-D stock bars (the FIFTH thing I got rid of), H-D stock forks (got rid of THOSE recently), H-D stock .055" nasty-azz head gaskets, H-D stock flat black front brake calipers...
There seems to be a TREND here...