I currently have a dell XPS 15 (1st gen i5/4GB ram). Im happy with the performance, but it's very bulky and 1 hour of battery back up. I'm thinking to shift to MBA 2013 base model (i5/4GB). I'm about to join a firm as a SW/Web developer, so might need to use windows 8 on bootcamp for Visual Studio and dreamweaver. Can I expect similar performance and is it worth the replacement, considering the nature of job I might need it for?