I owned the South African manufactured version of this pistol, the Tressitu TZ-99 for a couple years. As far as I can see, the only obvious revisions between it and the EZ9 are a different hammer style and the front rail.
Anyway, I really wasn't much of a fan of my TZ-99. It has a grip width that makes a Beretta 92 seem slender, the finish on the frame chipped off in flakes at all the wear points (the rails, the rear of the trigger guard, the decocking lever/slide stop path). It's different enough from the SIG it's obviously based on that I never found a decent holster for it and was stuck with a generic Uncle Mike's nylon rig. The trigger was neither stellar, nor bad - think better than an H&K or Ruger DA/SA auto, but definetely nowhere near SIG, Beretta, or even CZ quality. The most irritating thing about it for me though is it just wasn't very consistent accuracy-wise. I got it to group about 4" at 21 yards with factory ammo, but even closer up the groups were always spread all over the place - getting two holes to touch was a rare occurrence. In this respect, I hope the EZ9 is superior. Oh, and it chucked brass in my face... A LOT - shooting glasses are a true must with these things.
On the plus side it never malfunctioned on me, and it did come with 15 round magazines when everything else was being sold with 10 during the Clinton AWB. I'll also point out that even though the frame wore to hell within 200 rounds, the slide remained immaculate.
Finally, the combination slide-stop and decocker takes some getting used to but once you get the hang of it, it's a pretty slick and easy system to use.
It's also on a VERY short list of semi-autos I can think of that is ambidextrous for all it's controls (mag release, slide release, and decocker) - so if you're a lefty this might be a big selling point.
I paid $350 for it back then. Would I buy it again today for $300? No. It's not that it wasn't a good gun "for the money", it's that I don't really believe in buying guns I don't really like and enjoy just because they are cheap. Saving a few hundred bucks isn't worth the dissatisfied feeling at the range of having something you genuinely wish was something else, at least not to me.
Besides, I actually own a SIG these days - I'd never be able to go back to the imitator.