Coolie summed it up well about those 2 tyres but I prefer Vee Rubber VRM140competition series tyres for there durability and they are only about $45 for 12 inch. I find them to be a good all round tyre on both soft and hard terrain.
i got a millville on a 10" tyre and its wicked as!!!!! and ive had a carsbad on 12" and i hated it .....just feels to slippery for the size of it the look is even starting to get to me as its on like every single bike