I've been thinking

a lot about how to decide if a potential client is a deal maker rather than a deal breaker.
I did a search on this forum and only found two suggestions, neither of which answers my question: How does one decide if a potential client is one who pays her bills on time and is not a "I need my hand held most of the time."
How does one weed out the chaff from the grass?
This site is incredible so I was somewhat surprised that determining the quality of clients doesn't seem to have been discussed.
Some of my questions are:
- Does one use gross sales with number of employees?
- Use net sales with number of employees?
- Run a credit check on the client, client's business?
- Break even ratio?
- Something else?
Any insight will be so appreciated! Thanks in advance!