I will probably get flak on the F/8, but a
lot of people think that only a short F/value can see DSO's, which is not the
case - you just need longer FL eyepieces.

F8 is nice but makes for a long OTA.

Given the choice between two equal length OTAs, a 6 inch F8 Newt and an 8 inch
F6 Newt, the larger scope will perform better on both planets and DSOs...

Thats my thinking.

jon