Trans brake

The time has come and now I have a pocket full of Biden bucks. I’m going to stimulate the economy by getting a trans brake finally for my dart. What are you guys using? Is there a particular company you’d choose? Who to stay away from? I’m leaning towards the TCI but $850. Tranny is bb 727. Already built basically. Full Manuel reverse valve body. All roller 440. 175 hp nx plate. TCI converter stalls at 3800ish 4.30 gear. What Aldo you recommend ????

And GO.