MAMP is fantastic for newcomers. It makes the process of setting up your development stack as simple as possible. However, this breaks down as soon as you need to extend or modify any of its components. Secondly, don’t you want your development environment to be as close as possible to your production environment?
I’ll be honest I really like this. I’ve been using the VirtualBox repo from Taylor Otwell for my VM and this has a lot of similarities. The biggest being that it’s setup like one VM for everything.
I did try to have different VM’s for each project but for me it was just more hassle than it was worth. Most of my projects are so simple that I just need a vhost, a db, and the ability to quickly switch between projects fast.