OD Is actually quite useful if you use it properly. There was an article either on this site or some other one where they compared and contrasted different camo patterns and what they're good for. I believe OD was rated as good for afternoon/night ops and early crack of dawn too (IIRC it was more effective than CADPAT in these situations however I'm not so sure about that).
CADPAT is good if you've got a lot of wooded and green areas, like the BC coast. MARPAT on the other hand is good if you're in a prairie, fallen/dead wood (standing wood but without a lot of moss on the trunk is included too), or generally brown dominated landscape.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE