I would agree with Einz, I have tried several times to compare Apple vs third party resellers on new releases (I have ordered from a local store or other online shop while a friend bought directly from apple, or the other way around). Getting it from the third party reseller has ALWAYS taken a few weeks more.
Apple seems to usually ship their own preorders first, or at least give very few units to third party resellers, until they caught up on the production. I wouldn't expect delivery until at least February.
I was going to order from B&H photo because they have always done right by me, they are usually a touch cheaper than Apple and often throw in some free stuff like a copy of Parallels or Elements.
But they are only taking pre orders as well.
The reason to order from a third party site (at least for me) would be to avoid the 9% sales tax where I live. At the price of a nMP, that savings is probably worth a few extra weeks.
I doubted Apple will allocate more than a handful to third party sellers before they can meet their current demands.
You are better off ordering from Apple.