I have one in 2.5-25x42 with 4 stage illumination on my walkabout .222rem due to its versatility. I can shoot Muntjac at 20yds with it in woodland and shoot crows at 300yds and everything else inbetween. The main features which attracted me are the lightweight nature of such a feature heavy scope and also the small dimensions. Just suits the rifle very well. The turrets are also bloody good. Accurate, tactile and never shift. Large choice of reticles and also come in FFP or SFP.
Optically the glass is very good in terms of depth of field, colours, contrast is exceptionally good. Edge to edge very good. I only have 42mm objective, so it is not going to stand up against a 56mm Schmidt at last light but it is good enough and I have shot Muntjac at 150yds after the sun has gone down but don't expect to be doing that on x25 power half hour after sunset.
It has a tightish eyebox on higher mags but then it is a 10 x zoom scope which is pushing the boundaries a little. That creates compromises like in all scopes. So at x25mag, it is fussy and in certain lights can be ever so slightly cloudy but up to x20mag, it is very very good. I tend not to use it much over x 20mag unless I am testing zero or working up a new load. Some people talk about fussy parallax on these scopes but I don't see that. I would say it is the opposite and quite loose over 200yds and further where you need parallax removed. Never been a problem for me.
If you want a small, light scope with a massive zoom range and a choice of reticles that will dial without any error at all, I am not sure there is really anything out there that competes. I really like the push button illumination in 4 stages. A small mention should also go to the included lens covers which are seriously small profile and do not get in the way but are really positive in terms of opening and closing which can be done silently or as quickly as you like. I use this rifle a lot and in the years I have had this scope, the lens caps have never malnufctioned and do not look like they will break.
Would I have one as an out and out deer hunting scope? Not in the format of mine. I would want a larger objective to get more light in. Their newest iteration (4.5-28x52 with locking turrets) looks to be very very good if the handful of reviews are to be believed. I am in the market for a new scope for another deer rifle and it is on the possible list but it is a lot of money. I am leaning towards a Polar T96 for that application but if you wanted a crossover scope that can do close up woodland, medium range open country, dial perfectly, be robust and strong and work with NV add ons, it is hard to see past them.