I am a bit confused (no really). Some lamp shades (B&Qs) are simply marked Max wattage 40W or 60W. Simple enough. Any type of lamp GLS filament, CFL or LED is O.K. up to that wattage. But a lot of other suppliers have their lamps shades marked GLS Max 60w, LED Max 6W, CFL Max 11W. All on the...