Although the interest rate is one of the key players in the loan that you get, it is not by any means the only important thing to consider. Are there any fees on the loan? Does the loan service offer different terms or lengths for the loan? The shorter the term, the less costly the interest will be on your purchase.
Loan services are often considered to be helping hands when you need something. Yet, realize that they are in it to make money. Therefore, you may need to take into consideration what they can offer, the cost of that item to you with interest and then decide if the cost is the right one for you to make.