i have both system and each one had some positive and neg point...... tekin motor run little bit hoter than castle neu and neu....but esc run cooler(the heatsink is more at the airflow)...i prefer bullet plug and the easy way to open the case to take care of the monster

the rx8 case is strong but i was scared to open it for clean the inside....both esc have the same worst negative point..

i didn't like the way that i have to change the fan 2 time a day because they are cheap....
anyway now we have more choice.....<