Cheers for the input Stu.
Speakers are indeed a completely personal, subjective area. I spent about 6 hours in one shop testing out every single monitor-speaker combination until I was happy, and even then it depends on the room/positioning/seating. At least that part is sorted as we're in the same environment
So the front ones are 6.5" components, the rears are 6.5" coaxial - is there another speaker hiding anywhere or is that it ?
And I presume it's a case of being careful with the depth, I don't want to cut anything up, just literally want to swap them over.