Cheers for all the advice, probably would be best if i explained in a bit more detail. I currently have a set of absolute 2s and tannoy reveals, both passive, neither of which do the job as well as i would like, but which suited my budget when i bought them. I've recently had a windfall and decided that i'll upgrade my monitoring system, and as much as i'd love to have £800 for each i'm afraid it's just for the pair.
I tend to do a lot of recording in different people's houses, and then mix in my room here at home, so some flexibility would be good, would that info affect any of your choices? I was swaying towards the Mackie 624 (in england it's £720 for the 624 and £1000 for the 824, probably should have taken into consideration the rip-off British pricing factor!), when you say they're hard to adjust to what does that mean exactly? I'll have a look at all the ones you have named though and see what i think. Thanks again, keep it coming!