I’ve got an older maxx d and diabolo, both 3/4 years old and work perfectly. I’m often out 2 or 3 times a week too. The Mrs has the new versions, both much brighter with similar burn times. Not 100% convinced on the new touch pad instead of a button on the maxx d, the old style button is much easier to use. Although, if you put it on automatic you don’t need to use it much.
The handle bar brackets are a touch fragile, I’ve broken 4 I think but that’s over about 6 years