For me, I prefer more realistic looking models. That's why I like the Lunchbox. It looks like the old school monster trucks of the 80's (google Rollin thunder monster truck). Like the others said, they are big, goofy fun. The do roll over quite easily and bounce around but put some oil shocks in and it will handle better. Never owned a wild willy so can't comment but the do look fun. I own a Frog and I find the brat/frog chassis the least maintenance out of all chassis types I own. You could always get a brat and put bigger wheels on it and make it a Mud Blaster. Whatever way you go, you'll have fun.