Lane splitting horn

I moved to the two wheel promised land, year round riding weather, and lane-splitting. it shaves a solid 30 minutes of my commute if traffic is bad. I have gotten into the habit of riding with my thumb on the horn button so i can chirp at people that might be about to ruin my day. The stock horn on the 650 is wimpy, and i want to replace it with something louder. What type of watts /amps do you think i could swing? here are a couple horns i am looking at, if you have any suggestions on horns let me know as well.

www.amazon.com/HELLA-003399801-Supertone...C_UL160_SR160%2C160_

www.amazon.com/Stebel-Nautilus-Universal...C_UL160_SR149%2C160_

www.amazon.com/Wolo-419-Bad-Boy-Horn/dp/...26&keywords=12v+horn

I have two flamm high low horns on the bike. You'll need a relay for them. Too hard on the button. I ride with my left turn signal on while splitting lanes. I did it in LA 40 years and do now. I also stay about 5 MPH above the speed of traffic. I see a moron coming up behind me going faster, I pull over and let him by. I've had people try to crowd the lane to keep my from passing, I've even seen one jerk open his door on a bike. Be careful.
Steve

You will need a relay. Take a look at the link below. It includes a diagram of how I wired a relay and 1 Fiamm horn to my bike while retaining the stock horn, and it includes a short video so you can hear the difference. Just click on the picture of my bike to see the video. Ed

www.kzrider.com/forum/2-engine/598462-horn#675382

Here's the relay I use:
www.jegs.com/i/JEGS+Performance+Products/555/10556/10002/-1

I have a Stebel Nautilus horn like the one you posted on my car. It's very loud, and I haven't had any issues with it for 5 years.

It is bigger than most stock horns - my brother is putting one on his bike and had to move it, as it wouldn't fit where the old horn was,

The horn button is wimpy. It completes the ground. Best to have a relay.
Steve