Low level - leave the
PR firms alone. They'll charge you a lot and can't guarantee you results.
What are you trying to accomplish at THIS STAGE in your marketing?
People approach marketing like it's something you just do and it takes on a life of its own.
Not so - marketing, like anything else (operations and finances) needs a plan. The best marketing schemes occur in a step by step approach. What are you trying to accomplish? Are you trying to create awareness? Are you trying to convert awareness to potential customers? Are you trying to capture brand loyalty? Or work on follow-on sales (additional salees with existing customers)?
The best marketing is a solid (well designed) product/service - something that people see the value in. MySpace did NOT market for its first 2 years and still managed to become the third most visited website on the internet. ALWAYS keep that in mind...