I went ahead & grabbed the 101a Conical Fulls I was asking about. Skated them @ Lakeland (concrete) for a few hours this AM. I'm not good enough to have any really nuanced thoughts, but they managed to be hard, loud & grippy in an awesome way while still allowing me to easily slide when I wanna. Probably too hard for skating my neighborhood streets, but will probably see more park use than my 99a/Classics.