This is a mixed bag of opinions. Actually, lunar and planitary objects are very bright and you can get away with higher powers on them that you can't get away with on DSO's. The long focal ratio is working against you, and for you. In steady seeing, at high power, you will have better contrast views with longer focal ratio. But if seeing goes bad, you are much worse off at the higher power. Don't give up on the high power SCT. The rule of thumb is 50 x aperture inches. But with bright objects, you can push that to 70 or 80 x. Good seeing conditions will cure many ills. <br /><br />Best of Luck<br />Bill