The strongest overall will be the TR2. Expect to take the surface up from 800 box however depending on your volume and surface to enhance the backend reaction.
If you do go with a GT1, which is a very good choice for the THS, keep in mind that the differential is lower. Don't be nervous with using strong pin placements. Generally 4 1/4 to 4 3/4 will be a good match-up to a THS.