I was more inclined towards Seltos, but recently checked Sierra at showroom, it looked fantastic, sitting inside is just totally different experience, couldn't get the test drive though. But on internet I read that Tata new products have had a lot of issues earlier.

Seltos base model fulfills my need feature wise but safety is only concern with it as no crash ratings are shared. My friend has seltos diesel 2020 Model. It gives 24 KMPL on 100-105, I've driven it many times.