does anyone have some experience with these scopes? I am considering a Platinum Nighteater 4-16x

Keep looking.

Got one on a .22 (in 2.5 -10 or thereabouts)Good scope for the money in Australia but you have better choices in USA.
Made in China if that matters, and it should.

Optics from China are getting better all the time as that seems to be the easy bit. Mechanically I still don't trust Chinese scopes to stand up to any amount of recoil over time.

On the other hand if you can get a Japanese Nikko, these are excellent optically and reliable mechanically