The Swisstool and Core are both big, robust tools. The Core has true needlenose pliers, and the wire cutters are bigger, but you can't get to the other tools without opening the pliers. With the Swisstool, you can use the other tools while the pliers are closed.
Of the others you mentioned, the only one I have any sort of familiarity with is the New Wave, but that's because I have the Charge Ti, which, as far as I can tell, is the New Wave with titanium handles and superior knife blade steel. The Charge is an excellent tool as well--I love the one-handed opening, and it's a bit more compact that the Core and Swisstool.
It seems to me that you need to decide which features are priorities for you. If it's the one-handed knife opening, or the true needlenose pliers, or the ability to get to the other tools without opening the pliers, or the size and weight, etc.
Me? I own the LM Supertool that stays with my motorcycle, a SOG P60 that stays with my boat, the LM Charge that goes camping with me, and the Swisstool that goes just about everywhere else (unless I'm taking my Handyman). And I'm not the one with the most toys here, if other threads are any indication.
