I have got the Restoration manual.
I find it is quite useful when used alongside the Haynes Workshop Manual (the workshop manual I have is very old and very rubbish).
The author (Lindsay Porter) really knows all the little tricks to dismantling/reassembling, so I have found that I am less prone to making silly errors (such as snapping bits of trim, etc) whilst working on the car.
It is also quite realistic in terms of what you should and should not attempt, for example replaciong a cabrio hood - don't touch it with a bargepole.