Dave,Shaggy pretty much nailed it. Those two harmonicas are the same except for the comb. And yes, I've found that for the average player, wood combs, unless customized, tend to leak air and are thus harder to play. The "MS" Blues Harp are much better than they used to be, but the ones I've tried over the years still tend to leak more air than the plastic comb models.
Try a few different brands and models and play what you like. There is no right or wrong if the harmonica plays good and sounds good to you. You can always change later if you find something you like better.
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Play on,
Dave Gage
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