I would suggest that the time is right to be looking at the final classic V12 model, the 365 GT4 2+2 and 400/412.
http://upload.wikimedia.org/wikipedia/commons/c/c3/Ferrari_400.jpg
It's a bit ugly - or is it? The more I look at this model the more I like it and even better it's cheap as chips. £5K gets you a project, £10K will get you something which is legal, £20K gets you something perfect. Not bad when you look under the bonnet and there's a Ferrari V12 engine.
All things being equal then these cars must go up in price once they hit the age at which we get all nostalgic about them (like the Dino). Maybe not yet, but the prices are rock bottom so buy one, stick it in your garage and discover it again in a few years.Better still, buy one and drive it. The neighbours won't know what's going on!