If I was going to get a car that costs THIS much, I wouldn't touch it. You just can't, to works of art. However...the Dodge Viper is an exception. It's crude, but fast. Anyways, for $50,000-$100,000 I would get a Porsche 911 Carrera 4 like everyone else has said if I was thinking about the winter, and other stuff like that.
If I was going to modify a car...I'd get a BMW 330Ci convertible, mod it to the European spec M3 convertible, and be set. NOT! Nothing but the best...I want a Corvette Convertible. I'll want it to be like the Z06, light and mean. Then i'd send it to lingenfelter so he can make it a tad faster so I can put Viper to shame on the strip, and on the road. It'd still be pretty though....sigh...my car which'll wax any Dodge Viper, yet still be practical.
One thing I hate about the Corvette's is their ugly interiors. Throw out those ugly seats, get soem Recaro's, thrown in a short shifter...put in some carbon fiber for the dash...sigh...
Sorry for the sighs, I'm giddy