Bro, Im getting ready to hit delts tomorrow... no big deal, 25G 1" there is some soreness afterwards, but nothing too bad. To be honest, Ive found that I LOVE injecting into quads. Mind you Im only going about 1-1.5CC, but quads are da shiiit. Minimal pain, and easy injects with a 25G 1". I know some bros hate em, but for me, they're smooth as silk so far.