Chris, I decided early on to go with 1.25" eyepieces with my FC-100DC and have been pleased so far. I started with the Pan24. It works much better as a finder than the straight finder scope decoration which will kill your neck. Then came the 8-24 Baader zoom which is my favorite. A friend offered a 3-6 TV zoom for a bargain so I added another zoom and a Baader Clicklock eyepiece holder. It was all working very well except star-hopping was a chore for me with upside down reversed view. So I bought a 1.25" Baader astro-grade amici T2 diagonal. This purchase was an epiphany. I cannot recommend this diagonal enough. At first, though, it presented a problem. The Baader zoom would no longer focus. Removing #81 from the light path solved that but made the Tak diagonal not work (which has not mattered since I use the amici exclusively). I had always wanted to try a TV Ethos, so a used 10mm came up and I bit. But the 10 Ethos would not fit over the Clicklock(Who would have guessed?) so a few weeks later I acquired a standard Baader eyepiece holder, stored the Clicklock away, and finally looked through the Ethos. The 10 Ethos works very, very well for a wide field after the Baader zoom has characterized the object well. Then I load the TV 3-6 zoom for higher magnification if seeing allows. I have enjoyed the 10 Ethos so much that I now am looking for a 3.7 Ethos to complement the TV 3-6 zoom. I considered the Pentax XW's at first but the 10 Ethos is such a pleasure to use. But if you ever get adventurous, I heartily endorse the T2 astro-grade amici diagonal. Thanks.Ethos 10beforeafter
Dave