Which brokerage would you recommend when looking for competitive margin rates?

Hi all, thanks in advance for your insight.

I'm wanting to know which brokerage firms you'd recommended for competitive margin rates. Ideally, I'd like very low margin rates with a reasonable customer experience.

I previously used Robinhood (many years ago) and while their margin rates are very competitive (between 4-5% depending on account size), their customer service is lacking, at least from my prior experience.

I've never used Interactive Brokers, but their margin rates are also very competitive with similar margin rates as Robinhood. I'm not familiar with their platform or customer service, though.

Are there any other brokerages you would recommend?

TIA for any insight.