Mtn_Infantry
AH elite
Swaro glass is pretty tough but I'd agree NightForce is generally a little more durable. I'm saying that as someone who's had to utilize NightForce's warranty but never had to use Swaro's (knock on wood). If you want another brand option, look at Kahles. They're owned by Swaro and IMO tend to be a little more rugged. Glass or at least the coatings is likely a slight step down and you're going to trade off i little weight for the durability. The K16i and K18i are both 30mm tubes and have 3.74" eye relief. You can also set up to the K18i-2 for a 34mm tube similar to the NF ATACR 1-8.Note: I was writing this as some of the more recent ones were being posted. I think I'm in general agreement with the last few posts above.
Regarding "you get what you pay for". I agree, but I think need to make distinctions about what we're paying for.
Speaking of two scopes I've never even touched but I'm pretty sure these details are widely accepted: a NightForce SHV is more durable than a Swarovski Z8, but the NF costs about 1/4 as much. The difference is in the quality of the glass, and you pay increasingly more for that. The NightForce has good enough glass and exceptional durability, while the Swaro has exceptional glass and good enough durability. There are different dimensions of quality that don't aren't always packaged together in the same way and the slopes of the cost graphs may be different.