I've got over 200 puzzles, 180 or so all require a different solve technique. Whether it be the 3x3 vs. Megaminx style or the skewb vs. Skewby Copter Plus style lol. Almost all of them require different or unique methods in order to solve. That's what I base my collection on, unique solves and fun puzzles. It's why I do a bulk scramble of my entire collection every time they all return to a solved state, you can't play with them unless you mess them up lol. I dislike seeing people calling themselves "collectors" when they've got 100 3x3's sitting on their shelves and only like 14 unique puzzles. It's a massive world. Speedsolving is beautiful, don't get me wrong, but there's way more out there that is worth exploring.