I agree with Craig. I have had many speedies over the years and the only one I have ever let the smoke out of was an Mtroniks. I have no experience with the MOPED but I have heard of others having issues. You may wnat to search these forums to see if you can find the relevant posts.

A good speedie is an investment that will stay with you longer than your chassis. With the moves towards brushless it would be worthwhile looking at the LRP TC, the Novak GTB or Speedpassion GT as these can run brushed as well as brushless. Keep an eye on the for sale section as you can pick these up second hand from time to time.

If cost is really an issue, try the Futaba MC330. I have run one of these with 540 and 27t for three years without a problem.