4x4: I love doing reduction on a 4x4. 5x5+ just seems to take so long; 4x4 is just plain fun!
Megaminx: Minxes, to me, are like cubes where you rely on intuition. I like the blockbuilding on it.
Square 1: Sq1s absolutely fascinate me. I love the idea of corners and edges being identical.
I also love big BLDs - they're not a puzzle, but they're so different from every other type of solve. No 3x3 solve, however fast, will ever impress me as much as 4+ BLDs.
Megaminx: Minxes, to me, are like cubes where you rely on intuition. I like the blockbuilding on it.
Square 1: Sq1s absolutely fascinate me. I love the idea of corners and edges being identical.
I also love big BLDs - they're not a puzzle, but they're so different from every other type of solve. No 3x3 solve, however fast, will ever impress me as much as 4+ BLDs.