Just to be clear. Don´t you need any response ststem on the aquarius? If you don´t is there any better yoyo without response system?

The response system on the aquarius is tight gap, which means there are no modifications done to the yoyo (silicone, o-ring, starbursts, etc). Also, the Aquarius is also discontinued, so a better choice would be the new Fiesta, which also has a tight gap response.