i quote Yeti on this day after day...
"throw the lightest weight you can manage"
which i take to mean, don't throw a 150 for 150s sake. but try that model at lower weights than what you're used to. if it's enough to give you that warm n fuzzy that it'll rip out when needed, give it a chance.
personally, i can't manage any 150 Leopard. 167+ in Champ or Star, and a full 175 in worn DX is where I get them to sing. Sidewinder at 175, a little beefy... 150, way too light.... but a 167 gives me a solid throw, and i get some extra work out of it.
i see it as a speed- and performance-based thing. is the model well within your armspeed range? do you have more than enough juice for it? do you ever want to flip it? or do you need it to stay stable?