Visited a friend today at his shop. During general conversation, Festools came up. He has a TS75 and two rails, one metre and the other looked about 3 mtrs. told me local Festool office in Bury St Edmunds. Although expensive, my friend reckoned time saved had paid for the TS75 very quickly. He works by himself and time is money.
He showed me how the rail guide did not require clamping to the work piece and said also savings from splinter free finish when cutting oak veneeers.
Thats good enough for me, if you know a better tool then lets hear about it.