Happy New Year to all HD riders. I just purchased a 2025 Road Glide and done a massive 600 klms thus far. I am really keen on opinions on the best but least expensive slip on mufflers purely to get a nice note. I am not sure what a Stage 1 upgrade would cost but I have been told it is around 3.5K. The 117 engine does more than I will ever need so just after the sound. Others opinions here would be good. In addition, I ride mostly with the bag of strife on the back and would like to get opinions on a Bluetooth or whatever system so we can talk to each other, take phone calls etc which integrates with the bikes built in system on the right side handle bar controls. Thanks heaps for opinions.