Thanks for all the recommendations! The Vuelta Corsa SLR seems to be the best option I've seen. ~1470g for low 200s. Reviews seem kind of mixed on the Vueltas though... even one thread recommending the Aksium over the Corsa Lite when it comes to durability?
I'm 145lbs max so I'm not putting a lot of weight on these wheels.
Could I find anything even lighter under $500? Anything approaching the 1300g mark for <$500?