Red orchids?

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Hello! I find a page online that sells orchids (whole saler), but there's no specific pics of each plant, there's pics of the common ones, but the price list is huge!
I have to buy one whole box, so I plan to gift some.

My grandmother always wanted a red orchid, which ones are a good option for inside of the house?
She has a few I haven't ID
I was hoping for ones that would be happy on growing conditions similar to the Phalaenopsis.
Outside she grows Oncidium.
But I know she wants the red one indoors.

Thanks!