Agreed! Got the perfect shape, just not my weight preference, i think its too heavy(ironically I like the Northstar over Protostar and loving my new Trigger which is 70g I believe)
Mostly the player, but it is usually yoyos that are a tiny bit wider, more V-shaped, but mainly a lot of weight pushed to the rims. The V-shape just makes it easier to land back into the gap. A lot of H-shapes work great too, as long as there’s a decent sized catch zone. The super-wide type of yoyos have an edge on horizontal play due to their more extreme shape.
However, a really good player can do horizontal with most yoyos.
Hope this helps!! I used to attempt but completely fail at slanted/horizontal play. That was until I got a Di Base! It was an AMAZING yo-yo for string tricks and a great yo-yo for Horizontal play!!! I would definitely consider buying one!!! Hope this helped!!!