The micarta will last the longest under normal use conditions no questions IMHO, but....
Alan used a wood handled Condor heavy Kukri to win season 1 of Alone...and if it held up to 70someodd days of hard use like it had to endure to the end of the show, I have no question that short of a defect or predisposition to split, the wood handles will outlast me....the wood they use is a tropical hardwood, its very dense, and holds up well to water.
Even knowing the Micarta would have a slight durability edge, I'd go wood every time....and I have
I own .....3? maybe 4 dozen Condor products.... I have all 3 handle styles, I do not care for the polypropylene at all and only have it on 2 knives that are not available with other handle options.
The Micarta feels good in the hand, and I do have about a dozen blades with that handle option.... I'd not think twice about it, its not bad stuff really...
But the wood...feels warm in the hand, alive almost, it has soul and it does not feel out of place in the woods, it does not detract from my enjoyment in any way but rather adds another layer of enjoyment to the blade.
all of this is of course, strictly one mans opinion.....I'm more than a little sure there will be those that prefer each style...I'm a wood and leather man, and that's one thing Condor does VERY right, their leather sheaths are some of the best in the business at any price much less considering they come on budget minded knives for free....in many cases having one of these sheaths made would cost you more than the knife did that came with it for free.... and their wood, well, I'm a fan...
YMMV......