Here is a side by side comparison of the new Biltwell Bonanza and Bell 500. They look pretty much the same size. I took the Bonanza for a ride and I like it better than my Bell 500. Here is why:
1. The Bonanza does not rise up at high speeds. I rode it up to 65mph and there was no movement what so ever. The Bell 500 tends to rise up and choke me when riding .
2. It is noticeably quieter than the Bell 500. I did not hear any wind noise until I hit 50-60mph. I think that the plush fabric liner cuts down on the wind noise.
3. I like how the strap buttons down flat. I hate how the Bell's strap has that silly loop when buttoned down.
Like I said before, both helmets looks the same on my head. The Biltwell Bonanza was not any smaller or slimmer than the Bell. I was hoping that it would be, but being a DOT helmet I think it is the best it will get.