Go to your local club and see which is the most popular. Popular cars mean there will be a lot of set-up advice and spares knocking around.
Both cars are good. At our club I would say the X-rays break the most, (The T1 was tough, the last 3 models of X-ray seem to be quite a bit more delicate) and the spares are pricey. The schumachers and Tamiyas seem to stay in one piece.
How they look is down to what colour you like