Hello

UPSC is always better that Bank PO.

Because UPSC has it's own value and it's very tough to crack UPSC exam, where you can crack Bank PO exam and post you get after you crack upsc are of top level class1 officer post. In bank PO you will be getting post of prohibitiery officer and work as Bank PO is very hectic and very much work load, and promotion are very late.

In upsc you can get chance to serve nation, yiu can also be the DM of district. You will enjoy doing this job. So at last i will say UPSC is best for those qho can crack it and Bank PO is best for those who crack it.

All the best for your future.