Looking for a similar banger? Rounded bottom?

My banger broke after a long time. It was a 14mm Apex brand quartz banger. It had a raised center in the middle that i really liked. I went to the same store and some nearby and they were sold out. Any recommendations? I'm not actually fully sure if it was a "Rounded bottom" but it was the closest type i could find, almost like those center core bangers but it wasn't raised as high.