Some of the sites we host are build with drupal. It's great CMS but with added modules needs more RAM.

This causes the site to use more then 16 MB RAM that is standard allotted to the cpanel accounts we can create using our regular linux reselling account.

Are all linux reseller accounts using 16 mb ram on cpanel or do you guys know of hosting companies that sell reseller hosting with more RAM on the cpanel accounts?

Or do i have to go VPS?

Best to email sales of some companies but with a VPS / Dedicated you can override it and set it to what you need to

Some companies do offer more than 16 MB, the default PHP limit it's 8 MB though.

Did you try asking your current host if they can increase the memory limit? Some host will do it without an issue as long as it's not excessive.

No my host will not cause they will then have to help anyone asking for different things