EZ as a prefix looks a bit cheesy, but for some occupations, say webdesign or hosting, it could be okay. In fact, the string EZ is rather common in domain names.
But banking or insurance circles are more conservative.
This one doesn't pass the radio test, which is a problem for branding.
This name has been registered and dropped several times since 2000 at least:
http://www.hosterstats.com/historicaldns.php?domain=ezInsurer.com
I can't find remnants of previous development. Not a good sign. That means that in its 17-year history this domain name didn't find an end user at least once.
Finally I found just 10 reported sales for the string 'insurer', which is not a lot:
Note that most sales involve a generic keyword to the left of the dot.
On the other hand, there are a lot more sales for the string 'insurance'. Pretty logical.
Now to cut to the chase: if there is one reported sale per year on average for your keyword, then the odds of a sale look remote. Good luck anyway, and don't fall in love with your domains.