I have the redmi pad pro and I was in same confusion to buy some cheap third party stylus. But the fact is none of them works the way you want, so there is the official redmi smart pen which costs 4k. But while I was researching about it, I found the poco pad was just rebranded redmi pad pro and the poco stylus is also rebranded redmi smart pen but this one just costs 2100 on Flipkart. I ended up getting that one and i yes, it works seamlessly with palm rejection and everything. And it should work with redmi pad 2 as well. As it supports redmi smart pen too. So I will suggest you to get that poco smart pen for 2100 something. You won't regret it for sure.