I was at BirdFair on the Friday, in poor light, rain etc. and scooted round the optics stands, some of the time in the company of Typo, who could certainly give a more precise evaluation than anything i'm going to produce.
It's not fair to be too definite or judgmental based on the tests you can make in the circumstances, particularly on the alpha stands, which tend to get all the attention, so this is very cursory in terms of impressions.
I really liked the Nikon HG 8x, which was compact, easy to handle with smooth and definite focusing and bright. A male reed bunting jumped up in front of their test area, and i got on it immediately, the resolution appearing good in increasingly poor light. I was told the EDG will continue, but there were no announced plans for an 8x32 yet. The 10x (i'm less familiar with this mag) appeared to have a little more CA, although minimal, and didn't feel (to me) to be as instinctive. Probably going to give the Conquest a chase. I thought the colours were neutral, although Typo and i did have a discussion on this!
The Kowa 22 is a cute little thing, but has not been designed for the birding market - it's a general purpose pocket optic, and is likely to come in a range of colours that perhaps birders would find a little off-putting.
Too expensive to be a 'car bin' though....Personally, i think if you're looking for birding equipment with this size of objective, you're better off with a reverse porro, even if not so compact.
Noctovid next - and again, the 8x. A family of mute swans was in sight of the Leica stand (great coffee!) and again, a buttery-smooth focus brought them into sharp resolution immediately. Bright, fairly light and with an overall quality feel about them.
I wasn't too sure about the edge of view however, when focusing on the top of a fairly distant tree; there was some form of compression of the image right at the edge in the left barrel that i couldn't reproduce in the right.
I checked for sample variation by using another one, which was similar.
However, having just had a large espresso, it could be me......
The stand was very crowded, and i wouldn't want anyone to think this was the result of any exhaustive testing - just an initial impression.
So to the Vanguard Endeavor EDIV. A different animal to the EDII, i thought, rather than a development of the same concept. The focus has been slowed down and the flat-view dispensed with. About the same weight and livery, bright and seemingly neutral (in what was by now appalling light), with no apparent CA. The EDII was famed for its edge-to-edge sharpness, and i got the impression this was slightly 'different' in the IV. It seemed slightly wider in FoV, but i haven't seen any stats to indicate that.
The overall impression i had, without any major new launches in the bins dept from Zeiss or Swaro, was that the middle ground is getting increasingly close to the performance of the Alphas, and there was plenty of competition in the £400-£800 market.
Best bang-for-the-buck that i saw was the Vanguard, i thought. I really liked the 8x HG, if only for its combination of bright view and ergonomics. Would reserve judgment on the Leica until some easier circumstances to try it occurs.
I'm not sure if the light permitted any real judgment at all on the Gavia scope, so won't give one, as the zoom was taking the EP down too far for the circumstances.
Again, i'd like to iterate that all the above is on fairly fleeting try-outs, in a crowded setting and very poor light, and so must be regarded as first impressions only.
Other headlines: the Celestron Hummingbird scopes (monopod-friendly) are going to find a BIG market (if they haven't already); looked through the Kite Bonelli, with it's outstanding resolution (but some CA) and the Lynx (which i liked, but i already have the Nikon M7 8x30, which is very similar) and found Celestron's big porros strangely easy to hand-hold.