Swarovski Z3 4-12x50

[volunteerconservationist]

So I bought a used rifle (Thompson Center Icon in 270) topped with a swaro Z3 4-12X50. I know swaro glass is really good. This looks to be their budget option. How good of glass is it? What does it compare too (other brands and models). Looks like you could pick the scope up new for $800-900 from a quick google search. I sighted the gun in yesterday and at 100 yds my first three shot group all were touching. Shoots like butter (great trigger on that gun in my opinion but I'm no gun genius)--and apparently the scope is great too. When I buy another rifle....what other scopes are comparable to the Z3?