Thanks for the feedback, guys!
Sorry I haven't replied sooner, but I was out chasing elk.
dotman,
I also think a Razor HD 65mm spotter would be a great addition to the Vortex line.
Juan_ID,
I have seen the Swaro 80HD many times next to the Vortex. In my opinion, it optically performs very similarly to the Vortex. It has one big advantage however: it is the lightest 80mm class premium spotter available. It is also really slim and fits well in a pack. It compares to the Zeiss the same way the Vortex does. The eyepiece is better corrected for distortion and edge CA, but it is narrower on the low end, and less powerful on the high end. It is another great spotter. I am very curious to see the new ATX series spotters from Swarovski.
Rock 2.0,
Thanks for the comment. The "seemingly" had me scratching my head, but I will do my best to convince you in the future!
trdhunter,
Optically, the Kowa 88 Prominar has the best corrected 20-60 image on the market, IMO. My concerns for hunting are the pure flourite crystal objective (could be fragile), and Kowa does not currently offer a super-high mag eyepiece. It also has an entirely unarmored magnesium body, which begs for a field case, and is cold to the touch when in the field.
yellowknife,
During my evaluation, I actually used both eyepieces with the new Diascope. I took the spotter to my friend's house (huntingbigsky on rokslide forums), and put it side to side with his older Diascope 65 tFL. We put both eyepieces on both scope bodies. The yellow bias and edge blurring was definitely a result of the older style eyepiece. The new eyepiece would certainly show a good improvement on your scope, and it will mount right up. However, it will not lock, as your scope body doesn't have a receiver for the pin. Improvements to the new Diascopes didn't end with the eyepiece, though. Zeiss claimed an increase in flare and glare control when glassing into the sun, and huntingbigsky and I looked at that also by glassing some tree boughs right in the path of the Montana setting sun. The new Diascope had a noticeable advantage over the older version, regardless of which eyepiece was mounted.