What issues would you consider important when choosing a power range, rectile and scope objective diameter? I am setting up a factory Sako 75 7MM STW. I do not know if parrallax would become a problem if a large objective is used. My brand of choice is Leupold. I know there are advantages to other scopes, but am very happy the product for the price of Leupold. Initial use will be Mule deer hunting in the high mountains. I do not expect to attempt shots in excess of 400 yds. The shot (most likely) will be at dusk or dawn in potentialy low light - dependent upon weather and terrain. I hope to draw an Antelope tag in the next year or two. The 7STW will be my rifle of choice for that hunt. Thanks for your opinion.