Chris......I'm interested in your points ..... I'm quite new to cyling but (and it pains me to admit ....sorry guys) prefer it to the running.....LOVE my bike can happily do the miles and spin all day and I really don't feel it's anywhere near as hard work (and I'm not going THAT slow!!)
Running is a lot more effort for me.........I read your above post with interest though about the muscle differences and my not (possibly) being conditioned.... is this the case perhaps??