What are the best lowering springs for handling and a nice drop?

I have Tein springs on mine, they're nice.

There's no "best", it's all relative... that said, the best springs for our cars could easily be TRD springs, as they are specifically made to improve handling and feedback without taking away much from comfort...

I have tein, no real problem but I think you may get a better ride off another spring.

I have some lowering springs and I personally would say it does a decent job at dropping it but got to keep in mind that you'll still be sitting on stock shocks so it'll be soft and bouncy. Careful around deep pot holes. I'm planning on upgrading next year with some coilovers and shocks.