, Yep , back on track here Rod , 200x in a nice 6 inch f/8 newtonion is nothing to be sneezed at .
On the rare perfect nights ( 1 or 2 a year ) a good 6 inch newt properly columinated will easily top 400x on the moon or the brighter planets so a 3-4mm eyepiece that will give you that wont be used very often , but its good to have ,,, just in case .
Brian.