Starting out it’s almost an endless pursuit to find the best. It’s also expensive. It’s called GAS (gear aquisition syndrome) and you quickly find that in the end it’s mostly up to you.
Any of the mid priced harps from reputable manufacturers are good. eg
Suzuki Harpmaster, Bluesmaster
Stay away from real cheapies. Stay away from wood bodies & high end harps until you comfortably feel you know what you are doing.
For example if you start out with a Lee Oskar or any of the above you can be assured you have a good harp. Stick with it for awhile, learn to love it and it will reward you.