ATV Sand Tire Help?

[SPEEDY]

Ok i have a yamaha raptor 350 and i need some help on choosing some good sand tires that'll help my ATV hook up in the sand. What brand, style, and size should i go with. The brands i've heard of are Kenda, AMS, Skat-Trak, and ITP. If you know any that are better, let me know. The stock size for the rear is 20x10x9 and front is 21x7x10. Any help would be appreciated.. thanks