Ever since I started work on my Blue Basic project, I've had the goal of building a few hundred prototype boards. To this end, I wanted to buy a pick and place machine so I could do this at home. It's mostly a learning experience because, realistically, it's not the cost-effective solution.
I started by reading the always excellent Low Power Lab where Felix has written a great starter on pick and place machines. Go read it now if you haven't; you can find it here (http://lowpowerlab.com/blog/2014/05/19/pick-and-place-entry-level-options/ and http://lowpowerlab.com/blog/2014/07/14/pick-and-place-commercial-options/). My experiences don't quick match up with what's described especially when it comes to importing equipment, but I'll get on to that later.
Ultimately I did go for an imported Chinese machine - the SMT50 available from http://hothotsmtmachine.com. It had many of the features you really want: top and bottom vision, up to 40 feeders, multiple nozzles, support for panelized placement, and a bunch of other nice to haves. Also, the software is in English ... well ... sort of.