Fast growing SAAS start up with customers, simple subscribers to complex and custom packages.We need a better billing & ERP system. Help?

You should definitely take a look at NetSuite which is the leading cloud ERP system and includes billing, recurring revenue, contract and renewals management, and revenue recognition all integrated within their financial capabilities. NetSuite also has a large developer network including integrations with all of the leading cloud billing management solutions.

Rob

Are you looking for help to determine your requirements/conduct an evaluation of potential solutions?

An Ounce of Selection is always worth a Pound of Implementation, so if you are undergoing strong growth and changing customer needs, it pays to start with the pains you want to reduce/avoid and the requirements you should define for the next 3-5 years.

Based on your budget and your requirements, the range of vendors you should evaluate could vary.

Since you are already a SaaS company, culturally it makes sense to run your business in the same alignment as your product offering. There are good options out there for you to consider. NetSuite has been in the market for a while and has has established a good track record. Another strong offering that is emerging quickly is WorkDay. It is worth looking in to as they have a good product that will give you a good option to compare to NetSuite.

We are remaking our small but growing business into a completely cloud-based enterprise, and are using an integrated a number of different apps and solutions all built natively on Salesforce's force.com platform - or capable of integrating seamlessly with the force.com platform. in Q1 of this year we implemented FinancialForce, which is a complete accounting/finance solution and includes robust, flexible subscription billing capabilities since some of their large customers like the UK Telegraph and U.S. News & World Reports require subscription billings and revenue recognition in an online, ever-changing environment. In our company we actually produce very customized invoices for customers in our niche industry and are doing so with another force.com integrated solution called Conga Composer, which also allows us to do a ton of other complex documents like air waybills, bills of lading, transit and custom documents, etc. The force.com platform allows for the kind of customization you just can't do with most managed packages, and we are replicating our custom operations application on it now. Because the operations application is on the same platform, we can completely integrate it with Financialforce, and any other app we choose to use for other business needs like HR/HCM, payroll integration, time and expense reporting, etc. Salesforce is also integrated tightly with Google apps, so we can keep email communications associated with records. We also deployed Salesforce Chatter, and are transforming our small business into a "social enterprise" - currently focused around the finance function - but soon to be used in every area of the business, including sales, marketing, operations, IT and HR. Not sure if this information is useful for your fast growing SaaS enterprise, but for us speed to implement, TCO, flexibility and improved communications internally and externally were of paramount importance for our company.