My protostar was nice to learn on. Though I only know the basics of horizontal. The Dietz is the best undersized yoyo I’ve ever tried horizontal on and one of the “best” undersized 1a throws as well.
1)YYJ PHENOM/PHENOMizm
2)YYF North/Protostar
3) Onedrop Code 1
4)YYF Monster
5)YYF/Aoda Superwide/Monster/Miracle
5)YYJ Dark Magic
6)YYF Genesis
(The list is in no particular order ;))
btw my super wide is just about the only yoyo i can do horizontal on. I’ve tried my genesis and g5, but it fails. you generally want a stable yoyo so that it stays horizontal and dosent spin out and go straight. if that made any sense…