What specifically do you not like about the DAS plinth? I believe yours is constructed with a slab of MDF on the top. That's how he builds the plinths with the radiused edges because he can't wrap the radiused edges with veneer. If it were plywood, you'd see the layers of ply at the radius.
Do you think the top MDF layer has any negatives? Is the TT chassis coupled to the MDF layer or is it coupled to the next layer of plywood below the first layer of MDF? I believe DAS mentioned to me that the TT chassis actually sets on the MDF layer, but it was a long time ago and I may be misremembering.