I started my upgrade from Plossls with the less expensive 70-degree, 5 and six element eyepieces - Williams Optics SWANs, GSO SWAs and the like. Initially, I was wowed by their wider views, but it didn't take long before I was seeking better edge correction than these can provide - even at f/10. It became a bit of a distraction that the additional view they provided was not very good to look at. Your refractors will do better with these less expensive designs, but not your fast 12" Dob. Sadly, under $150, 70-degrees, and well-corrected are mutually exclusive - you simply can't get all three without spending more on more advanced, premium designs.
Your best bet at an affordable price is to look at eyepieces that provide 60-65 degrees. For example, the BST/Agena Starguiders/Paradigms, as well as Celestron's X-Cel LX line are both excellent values at 60-degrees. Hard to beat the Starguiders/Paradigms at just $60 each, and most are excellent performers.
If you want to go a little bit wider and spend a little more, the APM Ultra Flat Fields (Altair UF, Meade UHD and Celestron Ultima Edge are all the same eyepieces) provide an excellent 65-degrees and the sub-24mm ones are less than $150 each. You could invest in the 24 or 30mm later when you feel like spending $200.
To get good performance in all three of your scopes above 65 degrees, you really need to move up to ES 68s or Panoptics. There's nothing wrong with economizing and buying the ES/68s used here - all generally under $150 - as a used one is no different than new.
Hope this helps a bit. Remember - you can always start with what feels right price-wise now, and upgrade later if you wish to. You may not need to, but you can always sell your old ones here to recover much of your initial investment.
Edited by PJBilotta, 20 April 2021 - 08:31 PM.