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I suppose the issue is: what apparent fov do you want? I think that with the Pan you won't see the field stop so long as you look pretty much straight ahead. But in practise the natural movement of your eye as you study different parts of the object means that you will see the field stop. This doesn't happen with Naglers. I need to move my head to the side to be able to find the field stop, so in normal use you get the vaunted 'space walk' effect. If you are going to buy once then I'd recommend Naglers, or the equivalent from Explore Scientific (I haven't looked through one but I've never heard a bad report).
I used a 10" dobs for years (just upgraded to a 16"). My ep set is: William Optics UWAN 28mm, 20mm Nagler T2 - these two used with a Parracorr, 13mm & 9mm Naglers T6. For small objects I'd sometimes also use a 9mm or 7mm UO ortho. Magnification increases by about 1.5 as you step through the eps. Maybe a slightly smaller steps would be nice but of course you have to pay for it. I've been happy with this set.
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