If it's for plinking get whatever you want. But Oly is near the bottom of the barrel.
If it's for SHTF or potential serious use, buy quality. You'll regret it if you don't. I'm a firearms instructor at a large institute that trains thousands of people a year... the little things do add up to cause guns to fail. If it's for "serious" use, buy quality, you'll only cry once!
see this for a reference on who makes quality (bet your life on it kinda gun) and who doesn't. Your cheapest bet for a quality gun would be the basic LMT... actually a bit cheaper than is shown on the chart.