I'm going to use server load balancing with SSL encryption (certificate) for two web servers. What do you think about BIG-IP Load Balancer Limited 1500?
If you don't have specific questions about the load balancing scenario, you might get more information from an F5 salesperson. In general, the 1500 would be able to perform SSL offloading and load balancing. Determining which platform/hardware specs you need is highly dependent on the load you want to handle and what you want to do with the traffic.