My old karcher jet washer finally threw the towel in today, so were off tomorrow looking at new ones........I have quite a few karcher attachments so my first question is, do most pressure washers have a standard attachment fit these days (as in nozzle attachment), so that i could buy a different make and still use my karcher bits n bobs. And also what recommendations have you learned chaps got for pressure washers.......eg make,model etc etc