I'm looking to buy discs for my kids, 5yo boy and 8yo girl. I only want to buy them 1 disc each to start with. I was looking at an ultralight (120 class) Shark (4,4,0,2), but want the discs to go straight for them, so then I was looking at a Polecat (1,3,0,0) which is slower but has no fade. Any suggestions?