I have three 2" EPs that I use regularly with my 12" SCT, all TeleVue: 55mm Plossl, 35mm Panoptic, and 22mm Nagler. I decided on these three because of the spread in their FOV and magnification (also eye relief is a concern for me since I wear glasses). As follows:
55 Plossl - .9 Degree FOV @ 55X magnification
35 Pan - .75 Degree FOV @ 87X magnification
22 Nagler - .6 Degree FOV @ 139X magnification
So this gives me the ability to cover lots of different sized objects and frame them nicely by having a .15 degree difference between each respective EP. You'll likely want to do something similar, but as I said in my first post, your budget will dictate any recommendation I would make. (these three would cost you about $1000 total if purchased new, I got two of three used to save a bunch of money).
A tool that helped me was TeleVue's EP calculator. It will only show you TV eyepieces, but they have so many that you can usually find one that is close in spec to any EP you may be considering. This will help you pick EPs that complement each other. For example, you wouldn't want to get a 41 Panoptic and a 31 Nagler because they both give you the same FOV, just at different magnifications. So you would pick one or the other based on the magnification that best suits you and your EP collection.
Edited by bobito, 21 April 2017 - 02:57 PM.