The older HP Mobile Communications Supplies are quite nice (66309B/D, 66311B/D,66319B/D,66321B/D). The '11 & '21 models have a single output which meets your requirements. The '09 and '19 models have a secondary output which goes up to 1.5A.
Their keypad has numeric keys as a secondary function, so you can enter numbers instead of turning the knob. The main downside is that the fan can be slightly loud. They have fairly accurate voltage and current readback, too. For remote control, you'd need to use GPIB (a few of the older 66311B units do also have RS-232 control). I got mine for <$200 on eBay.
The '19 and '21 units allow you to have continuous sampling of current or voltage over time, in case you need to figure out the total power consumption of your project. Also note that the DVM isn't such a useful option, and requires its negative terminal to be very close to the power supply's common output.
I cloned the HP Control software for these supplies (using C# on MS Windows). It definitely needs some work, but would give you a head start if you wanted to write a GUI for them.