Thanks all for the very useful advice. I know Festool's quality having their polisher - very well made - but I can't justify the cost in this instance. I know I'm guilty of buying the best available, often pointlessly but in this instance - No!
Caroleb. Sorry, but a radial arm saw can't be set up to hold adjustment perfectly. I was a toolmaker, used to real accuracy and these saws are made comparatively roughly and have adjusting screw added, always inferior to castings finely ground to size.
As for all the others I've looked at, well, they all seem pretty well made and robust in operation although they each seem to have particular abilities which is why I was asking about accuracy.
The job is approx. 200 2ft. lengths of moulding mitred both ends for a timber paneled ceiling. Costwise, the most economical way seems to price out at having a pro shop run the mouldings in say, 5 metre lengths then cut to size on a mitre saw. A previous job indicated the cost of the mitre saw would be less than the extra shop cost of cutting to finished size.
Thanks for the help.