The Stebel Nautilus is my choice. Have not got it yet but it is on the todo list. Was riding 3rd bike back, CB on, and some tunes in the back ground when the leader layed on a double toot at someone coming up from the side street a little too fast. Scared the livin crap out of me because I thought it came from behind me. Hers was mounted to the frame just in front of the rear wheel at axel height. Im on a TC and hers was a cruise, I know differnt bikes but sound level performance is what I commenting on for ya. The rest of the folks got the location laid out.
I ride with a shorty but had the ear pad/neck warmer in so it wasnt like I was riding with a full face. My thoughts, best bang for the buck and compact to keep it hidden. If my current set of twin horns wernt so loud I would have already replaced them with this. Hope it helps.
2011 White Vision - Nuvi 550, Lowers, Lloydz 2nd filter, Vic perf filter, CB/Icom, 96 Brake LED's, Clear Signal lens/Switchbacks, VIC Hwy Pegs, Stebel Horn, 7Jurock 15" Shield, PCV, Lloyd ATS and Variable intake, Ness honkers
2004 V92 TC - S1 flash, level 1 slip-on, Ness big sucker K&N, ISO Grips, 4x1.5 Highway Hawg Risers, extra chrome (never too much), JM 2k CB 4' antena, Mustang seat, HD Front TS & Lowers, OD Pulley
Retired Navy SCPO