Ti has some other advantages, my 3 year old Ti frame still looks good, and is easy to buff up like new.. Also less susceptible to cable rub, being destroyed by chain suck or being dented. My anodised aluminum frame looked ropey after about six months!
DT of the cola, TT of the pepsi. If you’re asking for visual reasons.
+1
Not keen on the super swoopy DT or the straining dog TT look… but I’d go for whichever was stronger or easier to make if there was enough of a difference either way.