When I was in that spot, I went with the Razor 85HD.
The scope I sold to fund the purchase? A 15-45X65 Diascope FL. This was the previous gen Diascope, however.
Both spotters provide spectacular images overall, The Razor will just make use of exit pupil advantage at similar powers to the smaller Diascope.
The Diascope 85 TFL, however, may well be the finest hunting spotter currently available (The Kowa 88 is not really designed for hunters).