Tiencha.
Tien alone vs Krillin is interesting to me. Portrayal would suggest Krillin, but I've noticed that -- as the series progressed -- Tien only ever gets mesmerized by Super Saiyan tier strength, or whenever an above-SSJ antagonist starts showing off more of their power. It also seems that when the humans regroup to prep for an enemy, there's mutual respect and they're all capable of giving each other a good workout.