Germany's InEar Stagediver model with 2 Balanced Armature units. InEar, from what I hear, make military grade ear stuff. Basically, this is the lowest affordable model if you ignore the SD1 - which is known to have no bass whatsoever.
Sennheiser IE 500 PRO
Flagship of the Sennheiser IE Pro series: uses a newly developed 7mm Single dynamic transducer.
Sennheiser IE 400 PRO
7mm Single dynamic monitor following their little brother IE 40 PRO
Ultrasone IQ Pro
Ultrasone Hybrid IEM with 1 Dynamic and 1 BA - Made for professionals
World's first dynamic driver with Myrinx diaphragm membrane.
Co Donguri Brass
TTR Surround's next iteration of the widely successful Co-Donguri earphones. This time with a weightier Brass cabinet and Final's E type eartips