Hi HotDog and welcome , I have a 127mm Istar f8 refractor and it shows awesome features on the moon and planets , but as good as a scope is , it comes down to the mount and at this level of scopes the 127mm ( 5 inch ) is starting to shine on what they show weather it is a Newtonion , Mak or refractor , the mount's where it is at and that's why mine is such a great scope ,,, its the HEQ5 mount under the OTA , nice and sturdy
, and easy to use .
That's me .
Brian.