def the 30. they always say to size up 1. i wear a 26 in apc (stretched to 29) and im rocking the TTS SExDBxSxS12 jawns in 29. so im right where you are bud edit: i had a 28 before and i couldnt get to the middle button unless i hiked my jawns up like high waist. it COULD have stretched but it would have been at least a year lol sicne the leathers so thick. i ended up selling on here and going to 30. i already have another 2+ year old tanner so getting rid of this new one