I have an NcStar, bought for price, $49. Clear as a bell, I love the mil-dot recticle and it's a piece of junk. It was replaced with a $139 Simmons shotgun scope and the recticle spun. The gunshop replaced it and the jury is still out on the new one. This is on a Marlin 1894.
Rem. 700 SPS in .243 came with a WallyWorld BSA scope. POA changed with every shot, replaced with Nikon and now shooting sub-MOA.
Rem. 742 in 30-06 came with a Bushnell Sportview, saw one for $36 on the web. Shot cloverleafs @ 50 yds. and ran out of adjustment @ 200. Works great on the Win. 75 in .22 LR @ 100 yds.
As always, you get what you pay for and I'm the king of inexpensive.