The best Rubik's brand cube (in my opinion) is Mr. Magorium's Wonder Emporium. Available on amazon.com for about $8.
They come pretty loose out of the box. But after lubing, they're amazing. They still don't cut corners as well as a DIY, but if you want that Rubik's brand feel, these are money.
I posted a video here so you can see 1. what it looks like in box 2. how it handles right out of the box 3. how it handles right out of the box plus lube 4. how it handles after 3+months of use.
Check it out.