I've owned the 4.8mm, 9mm, 12mm and 22mm Nagler's. All are exceptional eyepieces. The 22mm was my favourite. Though, it delivered 127x mag in the C11 which I found too high power for many deep sky objects. Go with the 22!
I'm no longer a visual guy, the only eyepiece I now own is an 9mm illuminated reticle.
