In my opinion, Union Bank of India offers one of the lowest interest rates on personal loans, starting around 9% (depending on your profile). Many people prefer it because it is a government bank and feels more reliable.
However, based on real experience, the process can be a bit slow compared to private banks like HDFC or ICICI. If you are looking for low interest and can wait, Union Bank is a good option. But if you want fast approval, then private banks might be better.
So overall, Union Bank is best for saving money on interest, but not for quick processing.