Hi ColHut......
Have you tried a 'search' in
here, for some recommended E/Pcs yet? It may be advisable, if poss., to go along to your local Astro Society/Club's open night to 'try before you buy'.
Perhaps one of our resident E/Pc specialists will be along & give some assistance with your choices.
HTH.
L.
ps. If you can manage to find some older Meade SP 4000 E/Pcs, they are pretty good. I have a 5 mm & 6.4 mm + the #140 barlow, which work well in my 10" f4.5 dob.. Others also recommend the newer Meade series 5000 as well.