They’re all great bikes, although Orange more likely to tick your ‘lack of maintenance faffage’ box
I demod the Four and 5010 a few months ago. 5010 was superb; very well made, no flex, easy to manual, good climber. Orange Four felt slightly more visceral; not as composed, more pedal feedback. I preferred the Orange. The only reason I’ve not bought it is I’m not convinced the Four will be as good on the annual Alps trip as the 5010, and I understand the Five has been reworked a bit to ride more like the Four but have more travel.
Imo ‘better’ is very subjective. I like a bike with loads of feedback, one that gives me confidence to jump and pop off things, happy to put up with a bit of pedal bob. My riding buddy just likes to sit and steer with no pedal bob. Different bikes suit different riders
Hard to make a bad choice with your shortlist tho