Thank so much, Bodgeitandscarper! Those are actually the threads I was interested in.
I wanted to buy Madeira poly thread, but since the sets they sell locally have a very weird assortment of colors, and I'm just too lazy to go through all the colors and buy one by one, I'll just buy a set of Simthread. Price - wise there's not that much of a difference.
By the way, how fast does the thread get used when embroidering? Would 500m cones be allright or should I go for the 1000m ones?