Is h1b-visa better or h4-visa better to enter USA?

Hello guys, I would really grateful to you if you send me some suggestions on query I have. Me and my wife are physiotherapist by profession, and recently my wife got one of the employer who is ready to sponsor her for H1B visa for work. My question is whether I should go on H4 dependent visa and den try getting a job in US or shall I also look for employer to hire me?

What are advantages and disadvantages of going on either of the visa? can someone please send me valuable suggestions.