depends on what year of echo rims you are chattin on about 06 model are like a bowl of cerial (snap crackle and pop) the 07s are pritty strong only seen one of my mates kill one lol but he was dropping stupid hights. try-al are strong but i have never bin fond of the slightly angled rim surface but i never have killed one yet. echo 07 rims are your best bet also there is alot of topics like this and if the search button dosnt seem to work for you best bet is to check through a few pages just to make sure cheers biddle