Joker, when you are rating these IEMs are you taking price into account. I ask because you rated the Monster Turbine over 7.5 and JH13 a 10. So a jump of 1000$ gets you 2.5 improvement? I auditioned the Monster Turbine a while ago and didn't think it was that good. If the Monster Turbine cost 1099$ excluding audiologist fees would you still rate it at 7.5?! This is quite concerning.
Otherwise I do not see the point in spending heaps more for a marginal improvement in sound quality.
Price is taken into account only into the value score. Also scores are subjective to some extent but first, diminishing returns are something that everybody who's been longer in this hobby acknowledges and second - a 2.5 jump in score might seem low to you on paper but it's not such a small difference when you jump from a mid-fi stuff to higher end. And finally, personal preference plays a big part in this hobby but joker tries to score the iems on overall sound and technical performance, so if you see a 10 it's because something is that good.