Which makes better RT out of those two depends on many factors, Neither will really create "red" texas. If your lucky you could get a few out of it. About 50% wont fade, 25% white yellow, 10% orange, 5% red and thats if your lucky.
Rather than starting with what RT breeders were doing 10 years ago, why dont you pick up on their progress. Get a nice SRT female and breed her with the reddest fertile kamfa you can find. Thats how I would start. Good luck in your endeavours.