why not use bona again

Let's compare apples to apples, not to oranges.

Glitsa Infinty opposed to which Bona finish?

I was considering Bona HD Traffic but he said he doesn't like Bona at all.

Bona Traffic HD is the BIG BOY on the block. It is the best of the best. It is what every other flooring finish attempts to recreate. Even I, as a Loba 2K Supra AT lover, have to admit that Bona Traffic HD is the leader of the pack in North America.

Glitsa Infinity II is rated as an oil modified product. That means it will turn yellow. Glitsa produces 1 part products which are much easier to work with (makes the job easier for the refinisher).

The 2 coats of Glitsa TruSeal is recommended over White oak to prevent tannin pull (tannin pull causes white oak to turn yellow over time).

This doesn't make sense to me. Why use a sealant to PREVENT white oak from turning yellow when you use an AMBERING PRODUCT like an Oil modified finish??? This is weird for me. But that's me.

The question becomes - Do you want a YELLOW floor? Or do you want a floor that remains TRUE to the 'raw look' of wood? Do you want your floor to turn yellow/orange over time?

If you say "No" to the yellowing then your contractor is using the wrong products for you.

If, he likes glitsa. Have him use glitsa max, which is there top of the line product. That would be closer to traffic hd.

You're best results will be allowing him to use the products he is competent with.