^^^
I have a Summit but never tried a Orca. Here’s what I can tell you about the Summit. It is quite light for what it actually looks like in picture but you can always change the side-effects. It does require a straighter throw than most of my other yoyos to acquire a solid feel and longer spin times, don’t throw it crooked. I have the silver plated variant, it is gorgeous and is my most beautiful looking yoyo, that shine…
I have both and honestly prefer the Orca. The Summt, as LeDave said, is very light (too much for my taste). The Orca is heavier and easier to control. Thats my opinion, though!