I wanted solid oak. Then I priced it up (not just skirtings- architraves, liners, and stops too) and had a change of heart. Considered veneered, but it wasn't all that much cheaper and seemed far more vulnerable.
In the end I just went with MDF, and painted it. Very happy. Not only did I save a lot of money, but fitting was an absolute doddle. If you make a mistake, you just cover it with filler, sand it smooth, and paint. Can't do that with solid wood!
I already had bamboo flooring, exposed timber beams, and plain white walls. The colour of the skirts was a nice extra touch to what could have been quite a bland interior.