Preferably light cubes and not heavy ones. I also like cubes that turn smoothly and have little popping issue. I average around 28 seconds, still in the process of perfecting F2L and look ahead. I just moved abroad for study and I forgot to bring along with me my cube so I need a new one. My previous cube was a really cheap cube, I don't remember the brand but it's light and turns quite smoothly.
I have seen some reviews on the ShengShou Wind/Aurora and both seemed pretty good.
Anyway if any of you guys could give me some recommendations that will be great. Thanks!