At this level of quality of speaker the accoustic properties of the room (and the location of the speakers) will have a bigger impact on the quality of the sound than spending more money on kit.
I have the M040 which are a newer and more environmentally friendly model aimed at bedroom producers (i believe). There is also a cheaper M030 model.
The M series offer only basic room response controls (e.g. if the speaker is located near a wall or in a corner). The parent alludes to much fancier calibration achieved with the use of a mic and DSP's in the speakers.
The other thing worth noting is that genelecs are very neutral sounding speakers and also (as they are designed as nearfield studio monitors) have a relatively small sweet spot. So maybe not the best choice to fill a big room at a party, but I love them very much :)