I have had the MX-400 for about a year now going from the CP-PRO to the MX-400 was the difference between night and day. The MX-400 for the price is a great Heli, granted the rotor head is extremely weak (why I upgraded to the aluminum head) but for what its worth, not a bad Heli at all. I'll take the MX-400 over the CP-PRO any day. My CP just sits in the closet lately. As far as customer support I have not had to deal with Heli-max, most al of my parts is easily acquired. Thunder Tiger support and the Warranty on the .30 sized Raptor I recently purchased are another story, (Great Helo, but get it w/o the Thunder Tiger 39, Thunder tiger will not honor any engine malfunction, they choose to blame user on poor set-up) (Garbage), buy the O.S. instead.