I have MoH Frontline. The gameplay is pretty good; although I find it difficult to control sometimes. But that's just from playing 007: Agent Under Fire too much.
I remember playing MEDAL OF HONOR FRONTLINES when the old xbox was out and i was young. That game was so awsome I played it over and over. I loved D-Day, when you had to invade the beach and blow the little sand wall with explosives and stuff. The mission when your in a mansion was super good too.
I have Frontline and rising sun on original XBOX i quite like them but i don't like having 7 guns at once because i only end up using 2 or 3. you have to scroll through each one to find the weapon you want and in many cases its enough to get me killed especially in multiplayer. Enough said it is a very good game to play and my favorite mission is the one set at omaha beach at the start because it feels extremely realistic and its like living in the 'saving private ryan' film.