Depends, what are you planning on doing with it?
Should I get Unstable or Young dragon armor (skyblock)

A lot of things actually. Leveling up combat level, getting more dragon sets via killing dragons. Flexing on my friends ig.

Young dragon would be best for leveling combat, because the fastest way to get a higher combat level in earlygame is by killing ice walkers or crypt ghouls which are easy to one tap.
Don't do dragons to get dragon sets. It'll probably take 10x longer then zealot farming and then selling the eyes for money to buy dragon sets or whatever else. Eyes are about 800k rn and any non superior dragon set sells for about 800k per piece, and you need 3-4 eyes to get a piece of dragon armor. For zealot farming, unstable or strong will be best so you can one tap, or wise paired with the aspect of the dragons ability. Young dragon armor doesn't have any use other then speed, so for damage or dungeons I suggest unstable.
If you need help, please contact our Help and Support team.
title. Background info. Young gives up to 158 extra speed and a lot of (wise reforge). Unstable gives 20% more crit chance and 60% more crit damage. Health and defense are same. (plz know that i have a budget of 1.5m coins (i know im poor i blew it all on maxing out a AOTD) and that this is the first dragon set im getting)