I haven't tried lighter.
As many have said, more understable with more glide is generally more better. I'd recommend lower speed as well. For me, Comet, Leopard, Relay are the ones that get thrown on steep, steady uphills along the whole fairway or length of my throw. If it's a gentle uphill slope, or if there's initial flat then uphill (or uphill then flat), then I'll increase speed a bit. I've had success with Valkyrie, Beast, and Tern in this situation.
As many have said, more understable with more glide is generally more better. I'd recommend lower speed as well. For me, Comet, Leopard, Relay are the ones that get thrown on steep, steady uphills along the whole fairway or length of my throw. If it's a gentle uphill slope, or if there's initial flat then uphill (or uphill then flat), then I'll increase speed a bit. I've had success with Valkyrie, Beast, and Tern in this situation.