I have a Delta Titanium HD 2.5-10×50 and a Swaro Z8i 2-16×50. Do not notice much difference in the low light capability or in picture clarity between the two. In fact Delta might even be brighter in low light. The Swaro is much more sensitive to eye position. The red dot is finer and has much more brightness settings on the Swaro but the Delta's red dot is also quite good and daytime and nightime usable. Overall, for the money, Deltas are really great scopes. The only downside is they are long and quite heavy.