Me again!
Sorry for dominating this thread but I'm trying to help - yes, really.
First, you MUST calibrate your monitor. Most monitors are set too bright and contrasty so that they have showroom appeal at the point of sale. If you process your image so that it looks right on the monitor the image file itself will be too dark, as it's brightness and contrast is being boosted by the monitor. When you print it on a calibrated printer (or send it to a printing company, which will be using printer carefully calibrated to internationally agreed standards) it will be too dark and the colours will almost certainly fail to match those displayed by the monitor. In my experience, once a modern LCD monitor is calibrated it's relatively stable. All the pros will throw up their hands in horror at the assertion, but I'm talking about domestic usage. In other words, if you can borrow a monitor calibration device for a day, or so, you can calibrate your monitor and forget it from that point on.
For printing, you can use the printer manufacturer's paper (AND INK!) and output should be acceptable because the driver will understand this combination.
If you prefer to use third party paper like Ilford, Fotospeed, Permajet, they all offer downloadable ICC profiles which you can install to ensure acceptable results with your chosen printer/paper combination. In my experience, using the ColorMunki Photo to develop my own ICC profile give slightly better results, but YMMV.
realspeed's observation that ambient light affects the issue is correct. This is a fact of life, and not a shortcoming of the ColorMunki. All pros will post process their images in a controlled environment with standardised lighting and a hood on the very expensive monitor. Only you can decide if you want to go this far.
Hope this helps, and no offence intended to anyone who thinks differently.
Calibrate you monitor or you will waste paper and ink.