3x3 with extra steps and parity. Fun to do a few solves a day but not my go-to. 5x5 is a much more fleshed out and skill based event which is why i prefer it.
What i mean is that there isn't really that much skill to edge pairing as it's just 2 edges to pair, and OLL parity can't be avoided easily unlike 5x5, whereas 5-6-7 have multiple edges to pair and fun centers