As a current vert owner living in Florida (2004 MSG w/Black top/interior), I have a few comments...
First, the verte is great looking top down, but the coupe is definetely better looking when the top is up. If you decide on the coupe, the color pick is important especially considering the fact that you can legally tint your windows in Florida and create a more stealth look.
Second, although I enjoy all the top down driving, you need to pay extra attention to interior maintenance with dash and seat protection for the UV rays. Plus, with all the road construction going on around me (Bradenton/Sarasota), all that exterior dust becomes interior dust. I clean my interior every week if not more.
Third, driving a verte at speeds beyond 70MPH is nearly impossible to enjoy. Plus, never wear a hat that you really like because you might lose it. I have! (BTW - if anyone found a nice White Sox New Era BP Hat on or around Exit 220 off I75, I have a nice cold one waiting for you if you return it) :cheers:
Fourth, you really need to consider your driving habits/patterns. My C5 verte has serious blind spots with the top up. If you tend to drive more with the top up, you might as well stick with the coupe and just take the targa roof off when you want the open air feel.
Fifth, perhaps because I have black interior, it gets really, really, really hot after driving top down for a few hours in the Florida sun. Yes, it's great during the evening, etc., but it's something to consider if you plan to do most of your driving during the day.
Overall, I am very, very happy with my C5 04' verte and I'm happy with my choice (pics in my gallery), however since most of my driving is now expressway driving / weekend trips, I would definitely consider a coupe and use the extra $$$ on mods.
I currently have a daily business (sedan) driver and I'm seriously considering swapping my car approach. Meaning, go with a coupe/ZO6 for the performance driving instead of my C5 verte and switch to a four-seat retractable roof convertible for my daily/business driver.