Ijustnewit
I think you made a good choice , I have many years in the Optical game in one form or another. Lenses and the coatings and optical precision are most important. Many cheap lenses will have poor coatings that break down and some aberrations in the lense ( blurry spot or wrong power axis ect ). The best lenses have always come from Japan ( Nikon , Hoya, Sigma , Pentax ) or Germany ( Carl Zeiss , Leica ) . If it was me I would go for the Japanese.
Enjoy