Right now Toyota Celicas are looking like good buys with some potential to become neo ‘classics’, though of course, you'll meet the same criticism that you do of the CRX. Big saloons expensive then but cheap now include Jaguar XJs, Jaguar S-Types and Mercedes W220 S Class. But rust is a huge problem on W220 S Class. As you know, the problem with CRXs is rust. Due to the way the car is constructed it can be impossible to fix. But if your rust is only cosmetic then the car could be an appreciating asset. You'll get an idea what they are going for from Pistonheads or from the club.