For what it's worth, my experience has been that of course the great majority of crews are OK. But, if I'm going to have pushy types they will more generally be Brits, Dutch or Belgian (both sched and charter). I have also found that a larger number of new generation ATC colleagues show a lack of knowledge and as a consequence a good deal less tollerance to pilots and their operational constraints/pressures/workload. We live in a "ME ME ME and SCREW YOU" world now.