Please note that my first impression of the Genelecs 8331 was a quick one, not in my room and not set up by me. So if you are interested in these don't let my words scare you away. But I do mean that the 8341s is probably the one's you should try to if you like me want the possibility to crank the volume up sometimes and/or you will be sitting further away from the monitors.
@ sesdiamond
After some manual setting I may very well be able to control the bass to my liking. However, I read that the GLM software does only small adjustments and you can't do that many manual corrections. I'm used to room correction systems like Lyngdorf, Arc2, Antimode 2.0, Sonarworks and have them for cleaning up the bass/mid. Unfortunately I find that, to my hearing, they all present to much low bass after calibration. Fine bass but to much! I read somewhere that Lyngdorf actually admits this and say that their in-built correction curve "Open" is the flat one. With the correction active I thought the Genelecs played so heavy bass that you didn't really hear the the mids (I'm exaggerating, but....). Not the bass I want and for this money I want it to be very close to perfect from start.
@cortes
Nice looking up my speakers! Bought them from a studio in London last year when they moved further up to the Kii three. Bought them instead of Genelec 1037a SAM. Not sure I made the right decision, but the Gen's were too big. I mean it's a desk top system :-). Amongst others I have the ATC 150 ASL for main system. Havn't compared the Boulders and the ATC side-by-side but they are not too far away. Need an Antimode 2.0 to control the bass from the Boulders, otherwise it will overpower my working room. Also to clean up the bass/mid. Works fine.