The Revel set is by far the best, though it might be out of Production at the moment, and my set was made in orange for some reason.
You get a full colour party and mounted officer, and it isn't mixed in with Highlanders like Esci/Italieri.
The Airfix set was made in many colours, I believe HaT currently do it in Grey if you don't like the Red.
Pity Airfix never did a scaled down version of their splendid 1/32 scale set.
one nice thing about the airfix set of british foot is that they go perfectly with the newer strelets command figures. the officer with the pistol completes a box of the old airfix troops. and the colonels are great too. i use my airfix troops for the garrison at hougomont, which i think was guard units and a few nassauers. the hat british light infantry set also works well with the old airfix troops.