My use is visual only with sessions lasting as little as 15 minutes, so I'm looking at doublet refractors that will give better image quality than my ST-80, compliment my AT60ED better than the ST-80 (doesn't need to provide the 6.6 degree field, so f/5 at 80mm isn't needed), is light enough and portable enough to move in and out on a Tele-Pod mount head and suitable tri-pod.
I started by reading comparisons between the TV-85 and TV-76 for no reason other than I looked through a TV-85 once and it looked good.
I'm pretty new to refractors and when I asked the CN audience about small grab and go scopes, the AT72EDII received good comments. It's not fair to compare the AT72EDII to the TV-85, but it should compare to the TV-76, so I asked for that comparison, thinking it might apply to the 80 to 85mm class as well. The ST-80 and AT60ED OTAs have shown me the benefit of having a small grab and go refractor to maximize viewing opportunities in southwest Florida, especially during our wet season, so now I'm considering what to do to optimize.
I have the AT60ED for really wide views and I have a C9.25 SCT to cover high power and small faint DSOs when extended viewing time allows. I'm just considering what is best for short session back-yard grab and go's that fit in between the 60mm and the C9.25. An 80mm to 85mm doublet of modest focal length to give a 4.5 degree field +/- field of view might be best, but I just don't know. Targets will be mid to larger DSOs, but I also turn to thesolar system when positioning is good.
I'm open to any brand as long as it hits the key points and has a good reputation for quality and reliability. One thing I do want is a dual speed focuser. My ST-80 has a single speed 2" GSO, which works well, but I'm better with the dual speed on the AT60ED.
The question is, what are you looking for between the two?
And another question, why only those two and not including more scopes such as 70mm triplet and another 70mm doublet and FRA400  quintuplet and Sharpstar 76EDPH? Tele Vue is a great quality company and well known and respected for their products not just scopes, so adding their scopes to a cheaper affordable doublet and ignoring other options is kind of questionable.