Hello, I'm Nathaniel, and this is my collection. It's not too big, but it's what I've got.
I have in total 18 3x3x3's, mostly DIY's that fall under A, C, E and F.
6X6X6 & UP
The first 7x7x7. A seven layered cube.
I own the Cube4You version
I may have one of these, but it's broken.
This is a newer version of the Megaminx, published by Meffert, with tiles and 12 distinct colors.
Once again, I own the pillowed version made by C4Y and Meffets.
I own the pillowed Mefferts Version, more commonly known now as the Jing's Pyraminx.
larger version of the 3*3*3, I have one by QJ and one ES Super Cube