For those of you running the TMOA. How is it in hunting conditions near dusk and dawn? Is it just s opening in the cross hair or is there a Center dot? Tried a search on here but didn't find anything. Looked on Leupold site and there's not great pictures of the reticle. Also is the VX6HD worth the extra money over the VX6? Trying to decide between a VX6HD and a zeiss V6.