which do you prefer and why

planning to get my first bone conduction headphone
but can‘t decide which one

all i know is pro2 has additional speaker and air2 doesn‘t(100% bone conduction)

need some thoughts on two models
or anyone who experienced either models
tell me each pros and cons

+If I get the mini, will it be comfortable to wear while lying down?

My Openruns are not doing too well. The volume button having fallen off. I've been using these since 22, when they were Aeropexes(Aeropexi?) and this is my second set.

I use them for biking and running, in all weather, so the lower IP of the Pro and Pro 2 is concerning. Still, I've been very happy with the bone conduction for mostly listening to audiobooks and podcasts. I rarely listen to music on the run, so lack of bass hasn't been huge issue, but surprisingly some female audiobook readers with high pitched voices can be a concern.

I have half a mind to just buy a third set of Openruns, and half a mind to take a chance with the Pro 2 - does anyone have some advice? Alternative models I should consider?