I've never heard Those speakers (yorkville's), but if there popular around here they must be good... Im looking for a new set of monitors.... I've been using Ns-10's and Polk Audio RT-5's... I should check 'em out... Yorkville scares me a bit, I had a PA from them, and it said it was 400 watt, Yet.... The sound of my fingers hitting the keys was louder than what was coming out of the stacks, Ok well im exagerating.....