If you can afford it get both =).
C5 Coupe Pro's
Its faster out of the box stock for stock.
It handles better out of the box stock for stock.
I find it more comfortable
I feel like im part of the car
Targa top for that 'almost' convertable feel w/o having to worry about some hater cutting your top.
*great* gas milage if you can keep your foot out of it, I got 31.5 mpg on a 900 mile round trip at
speeds between 65-140.
If your into joining a local club It seems the Vette groups are a bit better organized than the mustang groups at least in my area ( va )
There seems to be a bit more Vette Comradere i.e. most vette owners wave to one another, and I've stoped to help other
vette owners and heard of others doing the same.
If you plan to hit the track ( not the drag strip ) the vette will outperform all but the heavily moded mustangs in the twisties.
More *trunk* room
Alot more 'Gadgets' Heads Up Display, TONS of info available on the message center
More aftermarket parts available ATM ( In 12-18 months that will change as the new style mustang vendors gear up )
Available Active Handling Which turns a poor-moderate driver alot better and helps keep the shiny side up when the
weather turns bad. be sure to turn it off or put it in comp mode at the track ( drag/circuit ).
Higher Top speed, Ive had mine to 165 and it felt solid, If I would have had more road i would have seen just how fast it was
capable of, I still had over 1500 left on the tach and I was still in 5th gear ( 6 speed ).
6Speed manual vs 5Speed Manual, the Vette manual will take a bit more getting used to since the gears arent
'evenly' spaced as they are in the Mustang.
If you want a 'Race Ready' Car pick up a C5 - Z06 ( better suspension / 385 or 405 hp depending on year ). I upgraded
my Coupe to a Z06 Suspension and love it ( about the only 'cheap' upgrade ive done for the vette ).
Mustang Pro's
Aftermarket parts are significantly cheaper ( Catback exhaust for mustang 3-450, for vette 500+, supercharger mustang 3500, vette 6000 ).
Tires are cheaper until you swap your rims. ( last set of vette tires ran 1400$ and I only got 12k miles out of them ).
You can carry more than one passanger
Better styling
You can get more HP for the $ with your mods.
Better Drag Strip Car since you have a solid Rear Axle compared to the Vettes Independent rear which tends to hop when you overpower the rear on the drag strip ( vette is NOT burnout friendly w/o suspension upgrades ).
More comfortable entry and exit since the seat mustang seats are higher ( the vette seat top is only 10" or so off the ground. )
If your area has alot of speed bumps/steeply angled driveways/parking lot entrances you will be happier with the mustang since
I scape the airdam on most speed bumps ( its designed to scrape set on springs to move when it hits something but its still annoying to
listen to )
Better *stock* exhaust note, if your going to do Catback or more than they are about equal IMO.
If you Like Automatics the Mustang has a 5 speed auto vs the Vettes 4 speed.
Cheaper repairs ( getting any work done is more expensive on average with the vette ).
( if you buy the vette ) If your Young some folks will think your driving your 'daddy's car, if your Old they
will think your going through your 'mid-life' crisis. Ive hit both this attitudes ( I look rather young, but
the people that know me thought i was having a crisis ).
misc
Im sure there's alot of stuff I missed, but go drive both, I have no doubt you will be happy with whichever you get. I bought my
Vette back when the 99-04's where the new mustang and hated the look, now Im looking to get an 05-06 GT for a daily driver
to keep the heavy mileage off my vette, and allow me to make some mods to the vette for track use that I 'wouldnt' want to
have to drive every week ( full race suspension/6 point harnesses/roll cage ).
IF you have the dough get both

.
Depending on your age the vette will be 'less' expensive than the mustang but only moderately so. I pay
900/yr for my '01 Vette and 1050 for my wifes '02 mustang. Both have a clean driving record, Im 35 she's
31. But I would check with your Insurance agent to get an idea what the damage is going to be.
Original Sticker on my Vette was 52k, Mustang was 24kish ( dont have the original sticker )