After the term life insurance at my house bank (where we also finance) seemed very expensive to me, I had the whole thing offered by an independent broker as well. With the same benefits, it costs me less than half at a renowned insurance company.
The arrangement of amount and term must be tailored specifically to you, or you have to know yourself what you want. The same applies to whether the insured sum should decrease linearly or like your loan. For example, we finance with a 30-year fixed interest rate and our term life insurance only covers 25 years. We also chose the regular protection and not "premium protection." For me, it must cover a financial gap in the event of death, no more and no less. We will be able to repay the loan much faster, which is why the term life insurance has the shorter term.