Early, single mirror cars, as well as later, more powerful versions are the preferred models, but low mileage and recent maintenance is more important than year of manufacture due to the Testarossa’s reputation as a complex and expensive to maintain machine.
There’s a large pool of eighties performance cars available for similar money, among them 911s and 928s, or the Testa’s Modena cousin, the 328. All offer similar performance, but nowhere near the visual impact or room for market growth available from a nice Testarossa.
Petrolicious gives many thanks to Brian Rabold at Hagerty Insurance for his invaluable research and help with this article. Check out Hagerty's price guide report for the Testarossa.