For reading I found 200 lumens warm white adequate but some shapes, like the ones you show, would not fit my fixture. I went with these.
They are not just LEDs but include a power circuit to keep the brightness constant at varying voltage levels and are polarity neutral. I added a piece of circuit board so the would fit the socket better and a piece of double sided tape. They are pricey.
The ones you are looking at appear to have the same voltage circuitry and have a color temp cooler than mine. If they will fit your fixture I would try them. They certainly are cheap enough. Raz