What are some brands to look out for during singles day sales?

Tomorrow is singles day in China, which I believe is when Chinese sales (equivalent to Black Friday) take place.

Given that it's mainly China-based, there aren't as many blog posts tracking the sales as there would be for BFCM.

So, in an attempt to crowdsource some of this info, what have people used and can recommend? For example, I've had some Haylou W1 earphones which are excellent for the price.