The Cube Snap Dude suggests buying these cubes (from Amazon)


These will work well right out of the box with Cube Snap (no customizations needed). I will get a small percentage of the sale if you use these links :-)

2x2x2



Rubik's 2 x 2 Cube


D-FantiX speed cube 2x2- turns nice - most recommended



3x3x3



Rubik's Cube 3x3 - Official




D-FantiX speed cube 3x3 - turns nice - most recommended



4x4x4



Rubik's Cube 4x4 - Official




D-FantiX speed cube 4x4 - turns nice - most recommended



5x5x5



Rubik's Cube 5x5 - Official




D-FantiX speed cube 5x5 - turns nice - most recommended



Pyraminx



Pyraminx (Dreampark) Speed Cube



Mirror



Mirror Cube w/Color - This looks cool with patterns and you can use the 3x3 solver to enter (recommended)






ShengShou 3 x 3 Gold Mirror Cube Puzzle






Skewb



ShengShou Skewb Puzzle Speed Cube White






Void



The Void Puzzle