Where should I form my LLC? NY, CA, or Delaware?

I’m new to LLCs and am hoping someone could help me save on legal advice….

My brother I are looking to make an investment in a private company. The company offering has a minimum investment requirement so we are planning on pooling our funds into an LLC and have the LLC invest in the company.

I live in New York, my brother lives in CA, and the company we are investing in operates in CA. Any advice on where we should incorporate, in terms of what is easiest and cheapest? I know Delaware is popular.. any clarity would be great..Thanks!