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When I replaced I used Bosch ICON all weather. They did a good job. I would shy away from OEM as they will be much more expensive than good aftermarket stuff.
OEM, rubber refills are only $8 each and they last longer than even Bosch Icons that is my normal go-to.
The OEM ones were looking a little rough, so I got all new ones and the price was actually about the same or a little less than if I went with Bosch. After realizing that, I bought another set (ES300 spec) for my Avalon daily. Also the RCF wipers were exactly the same size as my daughter's G35 coupe, so I gave her the old wipers with fresh refills.
Long way to say that the Lexus wipers are pretty good and actually priced better than quality aftermarket options.