I almost exclusively use brown plugs. Sometimes in soft brick for a big fixing I use the larger Fishers, with a bigger screw (the packets guide on screw size). I think the last time was when fixing a carport to the side of a house with coach screws.
Some people will say that a brown plug and 35mm screw is excessive for a curtain rail, but I don't care. Mine never fall down.
Some people will say that a brown plug and 35mm screw is excessive for a curtain rail, but I don't care. Mine never fall down.