Are you talking about buying gear if you are then taking a loan out in Credit Union is the cheapest option as the interest rates are lower that going though finance companies.
I have done this to buy stage lighting gear and one of the dearest gear is my lighting desk which I have just about paid back and it was even cheaper than the bank by 500 euro.
I think the Credit Union’s interest is about 2-4 % on what you borrow and finance companies are about 15% on what you borrow from what I can remember and that was on 4,000 euro and also it was about 17% for 2,000 euro.
Also if you pay back more when you can on your loan to the Credit Union with out getting stung for paying more back but you will with a finacne companies as far as I can remember when looking 2 years ago