Quote:
Originally Posted by PSALM19.1
3. When I look through an 8" at Jupter, I see a little detail (mind you, I've only ever looked when its low to the horizon and Spring is not necessarily a great "seeing" season); so how much more detail is a 12" going to show me? I do like looking at DSO as well but really prefer Lunar and Planetary (but not photography at this stage!)
5. Getting a 12" may free me up to buy some grander eyepieces!
So there you have it! Aren't you glad you're not me! 
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When the seeing is good to very good, my 12" SW Dob delivers the goods. I can easily make out the shadows as its larger Moons transit and that is through humble EP's. When the seeing is good and I get to borrow a Pentax or TV EP I need to be dragged away from the scope. I take the time to ensure collimation is spot on, so this helps a lot. I have looked through a few big dobs to compare and they are sometimes let down by not being aligned with care.
Sometimes I start thinking about a bigger scope but that is quickly cured when I have helped others pack up their gear. The 12" SW Dob is as much as I am willing to move around at the moment.