Which one would make me more flexible and what is a good like set of yoga or pilates videos?
I'm more like yoga. Pilates and yoga difference Yoge - is a kind of philosophy, is through the body practice reach a point, it has a lot of posture imitation animal posture, in view of the internal practice. Pilates, emphasize that the breathing and movement to cooperate, it is a kind of static resistance movement. According to the functional recovery and exercise, pay attention to muscle itself movement and breathing control, its pool in the muscle, design action is based on muscle movement, more easy to build muscle line, healthy body.
I would have thought yoga, although I base this on uninformed opinion, as I understand although pilates improves flexibility it also places a lot focus on strenght building and works more muscles. Yoga concentrates more on the muscles that improve flexibilty and mindset.
Yoga is better for improving flexibility than pilates by far.