I recently purchased a Compak K3 push, and could not be happier. I have a Rancilio Rocky at work, but compared to that I find the K3 quieter and faster. I also prefer the stepless adjustment as it allows finer control. You can get the K3P for a bit over $400, just contact the site sponsors using the quote form. For your budget you actually have a lot to choose from, up to a Mazzer Mini. Why don't you check out the grinder section of the forum as there is a lot of up to date info there. have fun shopping around.