Spino's are powerful anyone who says rexes are better has not used a spino they are faster and stronger they can also swim. Don't use rexes unless they are ur faves. Spino's are just easier to use. They won't die just because something gets behind u. Rexes will die to anything that gets in there blind spot, they are frustrating. Rexes are good amount I just will never use them if I don't have to. My main mount is the baryonyx.