Personal recommendation. They treat you very differently. When I started I was advised to go and see one a friend had used. I was nervous having been on PAYE all my life (and failing O level maths.. yes that long ago)
I walked into a dingy room with no computer and a small wizened old man peering over the top of huge piles of paper. Something out of a Dickensen novel.
He turned out to be fantastic. Didn’t mention a single percentage or figure. He told me how to behave and systems to adopt to stop me getting into trouble. Wonderful. He does actually have 4 people working for him who do “computers” but the behaviour thing was what has been the best advice since I started working and now employing people.
Don’t go to someone with big swanky offices, they are just looking for income, not relationship that will support and advise you.