I've got a nikon prostaff 2 x 7 that won't holdzeroon my disc shooting 240g xtp and 90 gr pyrodex. I've always have been an you get what you pay for guy however I've had extreemly good luck with the BSA 4 x 32 (around $25), it holds it's zero and has decent clarrity, the only draw back is a click is anywhere from the 1/4" that it says to 1/2 in or more, so it takes a little more to get it where you want it.