Hello Liam and welcome to cloudy nights.
I have tried many versions of these similar price point plosll eyepieces. They are more alike than different.
Orion, Celestron, Meade, Svbony ... I think many are made in the same factory. They are all good eyepieces.
If you want to upgrade these, you will have to go to a televue, vixen, sterling plossl etc. These will probably
cost you twice as much or more and only provide a 10 - 20% increase in better view. You will have
to decide if the extra money is worth it, if you are curious buy one in a similar focal length and see what you think.
Since you have a manual dob, you don't have tracking which means you have to bump your scope to keep
an object in view. You can buy eyepieces with wider fields of view, but this is when the $$$ signs start to grow.
There are some decent 60 degree eyepieces that are nice, however as you go wider, and want better correction
at the edge they can get expensive fast.
Plossl's also have short eye relief meaning that the shorter the focal length the closer you have to hold your eye.
Many 60 degree eyepieces have longer eye relief.
Many people recommend these, I have two of them the 8mm and 5mm.
I know these are sold in the US, but they are made in china and probably are available in GB under a different
brand. They are not any sharper than a plossl, but are a whole lot more comfortable to use.
I own no really premium eyepieces. I once compared a TV 20mm plossl, to a 20mm Chinese one and saw so little difference I sold it. So I can't comment on them.
2 inch eyepieces are really nice for widefield work. I have a GSO 30mm and it is OK for a scanning eyepiece.
The stars do look distorted in my F5 dob. It would work better in your F6. Because I live in light pollution,
I don't use it that often. Only to look for new things that I have not seen before. It makes them easier to see.
I'm sure it would be a real treat in dark skies.
Once again for 2 inch eyepieces, if you want stars sharp from edge to edge, be prepared to spend a lot of money.
Once again I have no recos on this. I don't own a good 2 inch eyepiece.
Edited by vtornado, 14 August 2019 - 04:04 PM.