I would go with the NT1 .... But Which one is better suited to get you the parts that you need.
Check out which one gives you a set up booklet, access to 100's of set up sheets
Go with the XRAY ... you'll be glad you did !
I have seen Ralph Burch drive an RC car, It was an amazing thing to watch. So I joined his team and got the same car... XRAY and RC AMERICA