I do have a good number of the Royal Roussilon sets and both the British and French officer sets. I am fond of these Royal Roussilon. The officer sets are outstanding. I believe the poses at least on the British officers are derived very closely from a drawing in one of the Osprey Texts (I think the volume, Wolfe's Army). Although likely illegal, the Frontline "Wolfe" figure is my "George Washington" on my BoM shelf - tall, red coat ..... it works!!!
Actually, many of the Royal Roussilon are reasonable accurate depictions of grenadiers, but they are not marketed that way. I think the large stamped cartridge case and the "moustache" identify those figures as grenadiers.
One of the british officers in the Wolfe set is an artillery officer, so great for those artillery scenes and dioramas. Took me months to figure that he wasn't in the British Navy.
Some of the 42nd figures are tempting.