The only problem I have with the Nexus, G2 and M8 is lack of replaceable battery. S5? From some of the reviews I've read, it's not worth the money over an S4, unless you plan on playing in the rain.
I love my Note 3, but if you're on AT&T or Verizon it makes the vault at Fort Knox look as if it's open to the public. We still don't have 4.4.2 rooting for it, Safestrap on 4.3 can only be used for TouchWiz ROMs and Safestrap on 4.4.2 can only handle a single ROM (and only TouchWiz). But if you have no plans to do mods, or if you're not on those carriers, it's a great phone, if a bit large for some hands. (I'm not the kind who has to be able to do everything with one hand, so I don't mind the size. I actually need it with my old eyes.)