I have found that our clients have always benefited from from staying loyal to the team that makes you feel the most comfortable and gives you the feeling that they are the most capable. Most likely you would find this dealer by referral or by researching the internet and looking at customer reviews and reading what other experienced. Searching for an auto loan in a situation with bumped and bruised credit can be exhausting anyway, so its best to be patient and search out one group or team not a vehicle that you want to work with first. The team that clearly has your best interest in mind and is a master of their craft will find you the best financing first and give you guaranteed options of vehicles biased on the best approval they find. Remember, finding a vehicle is the easy part, its getting clients the money to pay for it is the challenge.
The most important reason to stay loyal to the team you choose, is that lenders do not like spontaneity or inconsistency in an applicants file. Meaning if you are applying at a bunch of random dealers on a bunch of random cars, the lenders will see this on your credit report when you apply. This gives the impression of desperation and a sense of having an indecisive buyer. And that does not help when risk is high to begin with. So find a capable dealer, stick with them and keep in mind that they want to sell you a car just as bad as you want to buy one!