I have QGJ who has literally been with me since I started playing the game at Christmas, or STH who I just got arena ready this week.
It would pass either of them to level X gear. I'm leaning towards STH because I think the health gain for switching gear levels would benefit him more. However, it will be a while before I get enough parts to make another and I hear that QGJ gets a speed boost at gear XI. This would make it take far longer to get there.
Which is the best way to go. Thanks in advance for any replies.