This is my first post but I have been looking around for a while. My question is "What makes the US Optics ST-10 better than say the leupold mark 4 in 10x. The prices don't seem to be that different and I think the U.S. is much better but I've never handled either. So you know where I'm comming from, my scope is a burris extreme 6x24x50 and I want to upgrade. Thanks.