OK, so I took the advice of those on this group who said that paying top whack for a quality jigsaw was worth it.
They were absolutely right. My new Makita arrived today and I've just tried it out. I have my doubts that it is of earthly origin.
Cuts 38mm worktop like it isn't there, square edge and virtually no break out, Incredible. Follows a straight line perfectly.
I regularly build comedy head choppers for other magicians. Main part is two pieces of 12mm ply with a circle cut out for the victims head. I used to cut these one at a time then use a jig & router to finish them. I can now cut two at once with a finish damn near as good as the router.
Worklight is great! Blade change is a real treat.
Reading the instructions it mentions that you can trim a cut edge by running the blade along it. I though they were having a laugh. Not so. It will trim off a sliver of wood as thin as the blade is.
I'm stunned by how good it is compared to the crap I've used before. Just unbelievable - worth every penny.
There are definitely 'jigsaws' & Real Jigsaws!