Even if there is a slight improvement in the image quality between the two filters (i honestly cant see the difference in the comparisons seen here, except for the initial post), that doesn't give me a good enough reason to fork out 60 bucks (about AU$100 atm) for the "high quality" product.
You will notice a difference in flare handling. The cheap filters are not coated, at all. You'll find flare to be a lot worse with these filters. The more expensive the filter, the better the coating. This has 2 benefits: 1) It reduces flare and 2) better coating lasts longer.
As a rough rule, I tend to limit myself to spending around 10% the price of a lens on a UV filter. That means it's stupid to pay $100 on a UV filter for a $100 lens but you'd be crazy if you didn't spend $100 for a $1000 lens.