My hardware of choice is an Apple MacBook Pro upgraded by hand to include a SSD & 16Gb RAM. Favourite software; CodeKit, Panic, Tower & PHPStorm.
As of writing my recommended UA (User Agent) AKA Browser of choice is Google's Chrome. With advanced features that include multi-user account login, synching and close integration with the Google Apps suite makes it an excellent development and user tool.
In an attempt to creatively learn CSS3 with a creative Responsive Web Design twist I created this rubiginous layout and learned a great deal in the process.