Check out reflex style sights. No tube to look through more like the dot is projected onto a small screen.Lots of inexpensive options to try. I've had decent luck with a couple BSA's with a single color (red) and a few reticle choices. 5 moa single dot or a smaller dot (3 moa?) with additional lines/circles. The BSA comes up on sale periodically around $50.Dot size will influence price. 5 moa seems pretty standard and smaller dots cost more. Some people find 5 moa too big to be precise so you may want to see the size of the dot in person.