29 would be safe. Just know that the waists on PRPS fit tight but the hips are wider as they kinda have that baggier look on their styles. I guess they did this for more fit guys with bigger thighs...Im not sure. I have GTO and I wear a 33 in them, but it depends on the wash just like in diesel. The wash of my GTOs stretched more. I wear a 34 in Thanaz and 33 in zathan.