bonified, I would recommend the Cen out the two you mentioned. But its up to you. Just remember if you go with a 1/8th scale you are going to have higher maintenance/parts costs, and its going to go through fuel faster. You will also need a larger area to bash in. My yard is good sized and I still run out of room for my MT2.

And on a side note:
MX wherent you one of the people complaining because I was mentioning the Cen when it wasn't mentioned in the original post?