A Quick and responsive website. Much better option than looking for business details in Google. I often find myself checking up my competition, since you can find a lot of data here (but only for NY companies).
As a streamer I find Twitch to be much more easy to use than YT. Although in a long run it's probably more profitable to move on to YT some day. Time will tell.
Much better than Aliexpress. The quality is mostly very good. Sometimes things come broken or non-functional, but it's very easy to get a refund for those.