Hi Robert.
Nice scope. I've got the same setup.
I mostly use a TeleVue 8-24mm zoom with it, mainly for the sake of convenience. I can dial in the appropriate power level to suit the seeing conditions, usually between 12mm and 16mm. Sometimes more FOV is helpful, especially when viewing, or scanning for, prominences.
Lately, I've been using my TV BinoVue, with a pair of 24mm Panoptics. Now that's a nice view! A bit unwieldy though, especially on my Telepod mount.
I think the best single EP I've tried was the 10mm, or perhaps the 13mm Ethos, but it won't fit in the carry case.
Seems like an 11mm or 13mm Nagler would be ideal, but I don't currently have either.
Regardless, the Lunt definitely has a "sweet spot", so a little extra FOV is quite helpful in keeping the image there.
Enjoy our neighborhood star!
Linton