Loved the round deep fitting of the A1. Don’t like that the liner starts to delaminate after a while. I’ve had three and happened to all. Tried the A3. Does not have the same fit as the A1. Felt more perched on top. Returned. Now I run the Flowline and it fits basically the same as the A1, has better liner, more adjustable and I really like the visor as it’s got a lot of range.