Thanks everybody for contributing. I found that an educational experience, as I often do here on this site.
Here’s a quick rough rundown of everybody’s favorites or not so favorites. If it was only mentioned once, I didn’t repeat it here. Anything with two or more votes is listed.
Favorites:
Exhaust was the favorite mod. Of those that gave names, Rhinehart was the most listed.
EFI tuner was the next favorite-SERT had the most mentions of those named.
AC with a healthy 8 listings.
A three way tie with five listings: Legends air shocks, Hawg wired, and cams.
A respectable 4 listings for the the tour pack and GPS (gps also a non favorite)
3 votes each—xm, corbin seat, LED rear tour pack lights
The rest had two votes: Progressive 440s, HID headlamps, Wild 1 handlebars, chrome starter, heated grips, Bluetooth, Freedom wings, adjustable backrest, air horn (one minibeast, one Stebel- the minibeast also listed as a nonfavorite).
Least Favorites;
GPS with three votes.
SE slip ons with two votes.
Air horn with two votes (one minibeast, the other HD)