Agree with the "wait" and "patience" crowd. You have a lot of years of collecting yet to go. No need to chance a major escalation with your parents over it at this stage of the game. Respect their perspective now and soon you'll be in a position to make these decisions for yourself without the stress associated with defying them or trying so hard to persuade them that they lose some measure of confidence in your judgement.
I have a Cryo, as my EDC, by the way. It's a great little knife for short $.
I have a Cryo, as my EDC, by the way. It's a great little knife for short $.