For all the issues of casting with "the first one", (you're forgetting the ginger American aswell...) it's still one of the best films of the period, and for my money the final sword fight between Rob and Archibald is one of, if not the, best ever committed to film.
Alternatives? The Michael Caine version of Kidnapped for sheer comedy value, though Caine does have something of the appropriate swagger for Alan Breac; and the rather cringeworthy Chasing the Deer (AKA Culloden 1746) with
BRIAN BLESSED ("Charlie's aliiiiive!?"). However, for something with rather more impact, Peter Watkins' Culloden is still pretty powerful;My favourite scene is probably just prior to the battle, and the men in the Highland line are reciting their heritage and giving their reasons for being there, ranging from lifelong service to the chief's dynasty ("I am here because Machuilish is here, and it is an honour to serve on the field with my chief, as my father served his father, and his father before him" to the rather more practical "I am Dougal MacDonald, and I am here because a Campbell killed my cow...") Brings a tear to the eye and a lump to the throat, and that's from someone not daft enough to get sucked into the shortbread-tin-and-tourist-tat, rose-tinted perception of the campaign...
Great stuff Colin. Do you want a clan Maclachlan flag?
Still think this range needs expanding... I'm in for at least one 28mm Robertson one and one in 15mm too...

Similar to this-

though I suspect the Chief's motto "Virtutis Gloria Merces" ("Glory is the reward of Valour") should be on the banner, rather than "Ghargh na dusair", which is the slogan (war cry), translating as "Fierce when roused"... (I did see something fitting that descriprion for 10mm ECW, but I forget the manufacturer...)
I leave you (until the next update...) with this...