Muffins

Has anyone got a good muffin recipe. I made one I found online and although they were good I found them a little rubbery. Also I had to modify the recipe a bit as all the recipes call for plain flour with baking powder. i find that a little strange. Why not just use SR flour. i only keep in SR flour and a small amount of plain just for making pancakes.

i'd like one for blueberry muffins and one for chocolate chip muffins. Thanks.xx