Hardware, Database, Business Intelligence

Hello all. We are just starting up an IT Services Consulting company, we are currently 3 people, our current skills are Oracle DBA & MYSQL, and somewhat SQL Server, and we will like to learn from your experience. First is regarding the Hardware - what hardware and OS do you currently use and what hardware and OS do you think you may use over the next year or so. Do you have any favorite hardware vendor, and if so why. Also, among Oracle Database, SQL Server Database, Websphere and MYSQL, are you seeing any one database doing better than the rest. Also, we would like to get your views, if we want to also offer Business Intelligence services, are you seeing any one BI solution being a favorite over the other. Thanks for helping us