Much of a muchness and probably down to taste really Dave - the EZM is my preferred one as it is a more classic shape, a purer dial and the chronograph is readable in the dark; the Tutima has a 12hr counter to its advantage and is certainly housed well - the addition of the bezel over the standard Commando II is also a strong point with this particular one.
The pushers on the Tutima are good - you need a firm, positive push of course but I really like the 'integrated' design - the main drawback is there is a possibility of them getting muck in which may jam them a little - but that's not something I've experienced nor many others - it's something that was noticed only once by someone as far as I know.
I know 'Sweets' has the same combination and, I think, prefers the Tutima, but it's a marginal call either way I think.