So I'm about to become a new owner of two joeys...first time owning sugar gliders....I have everything but their wheel...I'm unsure what wheel is best, I've seen/heard terrible things about woodent wheels....but I'm also confused about how the stealth wheels are safe for their little fingers/toes if people say the slits in hamster balls will break them? Won't the mesh like lining do the same thing?? I just want a safe wheel for my babies...help please!!