For P&C what Rater Does Everyone Use? (Help)

I'm going to start up an independent agency and break away from being a captive or "exclusive" and I wanted to know what's a great rater. FSC Rater is the one a friend uses to rate with the appointments she has and she said its over 200$ monthly. Is that the best rater or is there one better for the price and would it work with all appointments? Thank you for your responses.
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