Greater Noida projects: NRI investment advice needed, please!

Builder promises for NRIs are often just on paper, it seems. I'm based in Dubai, looking at Greater Noida for investment. Specifically Sidhyansh Residency and Shubhkamna Kartik Kunj Apartments. My biggest headache is the actual builder trust factor; online reviews can be misleading. Shubhkamna Kartik Kunj is completed, but what's their track record post-possession? Sidhyansh Residency ka delivery experience kaisa raha hai for others? I can't do site inspections myself, so I rely on community feedback. Also, what's the real rental potential for both? I'll need a property manager, so good rental yield is super important. Which one would you recommend for better appreciation in 5 years, considering all the hidden costs that come up later? Is it even worth it for NRIs?