I buy a new helmet every 2 years or so. They start to get a little beat up just from banging around in my bags and shelves, etc. Also I don't know about others, but my helmets start to smell a little funky after a while.

My last two helmets have had MIPS. The two helmets I've purchased for my kid have also been MIPS. Does it improve safety? Maybe. I don't really see any downside, other than some models costing a few more dollars.

Helmet recommendations are tough - I've definitely had helmets that didn't fit my head shape very well. I also like to have enough room under my helmet to wear a winter hat or cap. I used to be really worried about having a "mushroom head" kind of look, but after trying a half dozen helmets over the years I think they all basically end up looking the same on my head.

Anyway, I have a Bell Z20 MIPS right now. It's been great. It's going on 2 years old so I'll probably be buying a new one in the next few months. I might just go with the same model but a different color.