GW has a lot of amazing sculpts it can be hard to pick. As much a I love my Eldar, there is only so many you can paint before it feels like work, that's when I break out something else to paint, usually a single box of something else is enough to break it up. Might be another way for you to get into 40k instead of getting big chunks of an army all at once.
Looking forward to see the new pointy ears with some paint on them.