Oh well. The brand really does matter. A while ago, I got a cheap Targus BT keyboard from Groupon or some place like that, and the problem with that keyboard was that after connecting to my tablet, if you didn't type anything for about 5 seconds, it would go into some kind of sleep mode. If you then typed something else, it would take about a half second to wake up, which would then contribute to repeated letters or skipped letters. An older Acer BT keyboard I used to have never did this.