Depending on money, I've used Center Point and their glass is very good, but they didn't hold POI or have good tracking, but I did like their features for what you got. I own Weaver V16 Classic(4-16x42A/O), Redfield Revolution(2-7x32), Bushnell Banners(4-12x40A/O), Simmons 44Mag(4-12x44SF), BSA Contender(6-18x50A/O) and BSA Sweet 17(3-12x40A/O), Nikon Buckmaster(3-9x40), and Burris FullfieldII(3-9x40). All these scopes have been excellent for my needs, but I don't have the cheaper scopes on centerfires due to them not being able to holdup, but the Bushnell/Simmons/BSA scopes I have on my 17HMR and 22's they do fine and put lots of meat on the table.
One NEW scope that's just come out that I'm trying to find, is Redfield Revelation. It's a 4-12x40 with A/O, and being made by Leupold should be a quality product for it's price of around $175 or less that I've seen. A person doesn't really need a 50mm Objective lens if you have a scope with quality lens that has quality lens coatings if you're gonna just do plinking during the daytime. However if you just want a scope with 50mm Objective and A/O, for the price I would go with Mueller.
Del