Although I don't have a NP-127is myself I believe the big draw card of this range in terms of the 'one scope that does it all' factor is their capability to do both widefield whilst also nice and flat as well as also being able to do the long FL stuff and good for visual and good for AP too boot. My understanding most scopes are really good and designed towards one specialised end or the other.
There isn't too much material written on the 127is but if you scale down to its smaller brother (or sister) the NP-101is they tend to garner considerable praise from all the reviews etc for this one-stop-shop-does-it-all capability.
Naturally, all of this comes at a hefty price
