First off I should say that the Enzo and the Veyron are not exactly in the same leagues when it comes to, well, ANYTHING! I don't know why you want these two compared, but this is right up my alley, so here you go:
Handling: I can bet my head on this: The Enzo handles a whole friggin' lot better than the Veyron (at least at this stage). Handling isn't even Buggatti's main concern yet, though it will be very soon. Right now they're trying to figure out how you can combine safety with 1001HP and how to keep that thing on the ground. The Enzo on the other hand even sacridfices some performance to get better handling. I wouldn't even want to be in a Veyron (whether or not it can pull a 0.9g).
As for power, the Veyron has a whopping 1001HP which comes from it's 8-Litre Quad-Turbo W16, while the Enzo's got only (sounds ridiculous, doesn't it?) 660HP brough to you by a 6-Litre V12. The issue of Torque aside, both engines make such high numbers that no lag should be seen. The Veyron (once it actually becomes a reality) will easily do 400KPH in the streets, with acceleration figures coming in at 3.0 seconds. The Enzo on the other hand does 0-62 in 3.6 seconds (ball-park), and only reaches 360KPH if it literally works itself to death.
The Enzo is obviously not all about performance, it is about showing Ferrari heritage and basically having a model that represents the badge in the best way, while showing what goes on in Pininfarina's crazy little world. The Veywon isn't exactly about looks (though I still think it looks pretty good. Honestly both the Veyron and the Enzo are loved AND criticized for their looks. The Veyron is more about showing what CAN be done when one day something inside your head pops and you think you should make a 16-Cylinder car. God only knows what they were thinking. If hitting (and slightly surpassing) the 1000HP mark was the main concern then they could have done it with a V12, but I guess they wanted to say: "Look world, we have absolutely NOTHING better to do, and therefore we'll make a 16-Cyl. super-car to show the world just how crazy we are!" Anywho, here are some pics (if anyone actually doesn't know what these two cars look like:
The interiors of both the Veyron and the Enzo (as you can see above) kick major ass. The Enzo's is more of an F1-style interior with the F1-style steering wheel, while Bugatti's designers seemed to be in between things and couldn't make up their minds on what they wanted it to be, so I don't know. Though it does look half-sporty half-stylish. They're both weird in a sense.
As for how much moola you would need to get your hands on one of these badass pieces of engineering, while you can expect to pay a hefty price for both, I think the Bugatti will cost a bit more. Though I don't think anyone rich will lose sleep over the price (and over which to choose regarding just how much green you need), since the difference between the costs will probably be about a thousand bucks or so. If you can pay for one I'm sure you can pay for the other.
One last thing: The Enzo is more in a final stage than the Veyron, meaning that you can expect many changes in the Veyron by the time they're done with it (and notice I'm not saying IF they will make it, because they WILL make it, given that they're still as crazy as always).
I'm not gonna post a bunch of stats and spec sheets here. To get full stats for both, go to a site like "
http://www.Fast-Autos.net/".
Oh, and one last thing: the comparing I've done here is of the 2003 Ferrari Enzo with the 2003 Bugatti
EB 16.4 Veyron. And if anyone sees something here they think is wrong, please correct me (I don't want to give wrong information).