I went HT with my build simply because the ST was going to cost a ton more $$$.
Bought mine through contacts here.
Word of advice if your HT comes without a headliner install soundproofing etc before bolting it on to your truck!
A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.
I don't know about the brakes, only their unreliability.