Those are good-looking mowers, roebuck. The one second from the right looks like a 21" self-propelled with the 4 hp engine, which would be an unusual choice I'd have thought. My favourite engine, but there has to be a limit to what 4 hp can do, especially on hills. I think the other 4 hp, second from the left, would be my choice, but the 5 hp on the far left is probably the nicest to mow with. Now, if it just had a foam pre-filter ...