Similar question in another forum so similar answer here.
See
http://www.televue.com/engine/TV3b_page.asp?id=3
Specifically
http://www.televue.com/engine/TV3b_page.asp?ID=2
and
http://www.televue.com/engine/TV3b_page.asp?id=154
Lots of good info at the last link.
I don't know what your budget is but the Tele Vue web site is full of great technical information and advice. I also recommend looking through as many eyepieces as you can at star parties preferably through a similar 'scope as your own as eyepieces perform differently in different 'scopes.
When I first looked through an original type 13mm Nagler I said to myself I must have one some day and it was nearly 20 years later before I finally got one. The same applied to a Tele Vue 24mm Widefield which works really well in any telescope. In fact all Tele Vue eyepieces work well in any telescope and you simply pick the focal length, apparent field and eye relief that suits you and your telescope.
When I first started though I did invest in some Clave Plossl which I still use often. There is a lot more to choose from now and it doesn't make it any easier.
Here is some more reading,
https://www.opticsplanet.com/howto/h...eyepieces.html
and this one is quite good with links at the end,
https://www.handprint.com/ASTRO/ae5.html