I was thinking about upgrading to 14mm, but when i tried one on, it looked really gaudy. But as you wear your chain everyday, it starts to feel smaller and smaller. haha
I wouldn't say the IFandCo micros are bad, but they definitely don't look like a Jacob mold. With that being said, I don't think their intentions were to exactly replicate the Jacob. As for the full size, I would just go straight to Jacob as his quality/craftsmanship surpasses many of the "hot"...