Talking of cheap drills, I bought a fantastic set from Scr.....ix, 0-13mm in 0.5mm increments, all contained in a fitted metal container. They are truly fantastic on softwood or hardwood, expanded polystyrene, even warm butter. When it comes to drilling steel however, well that's another story. So I bought a set of Heller bits - now there's a difference. Here I go again, prattling on about cheap tools.
I read once, over 40 years ago, that 'cheap tools are sh*t, they may not smell but they are stinkers to work with'. (Source - the Last Whole Earth Catalogue).
K