Multiple contracts and contact to product mappings

Multiple contracts and contact to product mappings

We sell a SaaS solution, where each contact would have a product associated to them that would determine the SLA support we want to give them. Can we configure this, or do we have to associate the account to a contract, then map the SLA. In short, if you have 3 priority licenses from us, we want to map them to the three users that need them, and hold everyone else to the standard SLA. Ideas?