rcdice sort of hits my decision squarely. In February, when I bought my 96, it had 8,500 miles on it. Within the next couple of weeks I'll turn 12,000 miles. I figure I'm doing between 700 and 800 miles per month, which I believe can be done with a low stressed Dodge pushrod engine, T56 Trans, and very little else. I have been putting some money into the Viper, chasing cooler engine temps, cooler sill temps, but those have been by choice, not required. I sense the Viper to be reliable enough to be a daily driver, (the Mercedes gets used when I need it for business, or for people hauling duties), but would be very concerned about using a Testarossa in that manner.
Plus, after taking the Skip Barber course, I came away thinking that I have lots of car to use, at levels I don't use my car. Still plenty of upside.
I am spoiled enough, though, to think a top and windows that I could have with me. That's what got me started down this road. A Testarossa that stickered at $161,000 in 1990 can be had with 18,000 miles on it, pampered, for LESS money than a 2003 SRT-10. That made the Ferrari seem like a bargain. Particularly if they are at the bottom of their investment range and headed back up. And the build quality, and interior appointments on a Testarossa are absolutely amazing. Imagine the interior of your Viper, all in hand fitted leather, instead of hand fitted plastic.
Having said that, I'm driving the Viper to work today. It will be grins, I won't worry about it in the parking structure, and I can drive it without worrying about preserving its investment value. That's very "freeing" for a car that still gets more attention, and appears far more "exotic" than my former Corvettes and Porsches.
Having a "bargain supercar" in the 96 Viper feels right at this point in time. And if the SRT-10s would drop enough in price to become a "bargain supercar" so that there would be a take along convertible roof and windows, that would be even better.