We are in a unique SaaS segment which has few competitors. In terms of pricing our plans, is it better to charge a premium (and get fewer customers) or price them low and potentially get a large number of customers (who pay a much smaller amount per month)?
Why not both if you can offer a more premium service for the premium price?
Other than that I would suggest you investigate what your users actually are willing to pay for your service. Dont go over, and no need to go under.
I know that might sound like a stupid answer.
If your product provides the same value to companies that can pay you $1000s/month and to companies that can only pay you $10s/month, then you're probably doing something wrong.
IMO, you should: