Short and squat gets my vote! Hopefully tighter nodes all the way up! Are they feminised? Should keep both and hope for a female if not! (if the seeds weren't from the same smoke though. you could have 2 completely diff types of plants and growths, in which yeild would be impossible to even guess at). From same seeds though, I'd go squat plant that probably even looks healthier(but smaller). You can always veg longer.... (Sativa/Indica are 2 diff animals)