If you are still looking, I would suggest a proper s/h drill/mill. I first met these may years ago, and managed a few years back to get an Arboga ( Swedish machine ), which has drill capability up to 3MT, and also has a proper milling chuck, which is a very quick change over. You also get the benefits of a tilt head, x / y table,geared speed change, and the head is rise and fall, rather than the table. being keyed, it is possible to drill a series of increasing sizes, without loosing the concentricity. When used with proper regard for it's limits, I have yet to find problems with it, and it's little bigger than a good pillar drill.