Thanks for the quick reply. Since I might only be ordering cubes once (shipping and import charges are a killer), I'd like to get cubes that I can use at both intermediate and professional level. I checked out your YouTube channel and your review of the LingPo (great channel by the way), and from watching it, it seems like it locks up a lot. Is that just the way it looks, or is it actually a really smooth cube? The ShiShuang doesn't seem much faster than the Rubik's 2x2 either, so I think I'd need a faster cube.
I took your advice with the 3x3's onboard, and right now, I'm planning on getting both the YJ Chilong and the ShuangRen V2. How does this sound? I'll check out that lube also.
LingPo locks up during reverse corner cutting on loose tensions. But, It is nothing to worry about.