Study shows that all implants grow LGX does faster.

[DougAnd]

During the ten-year study period, 2.749 patients (1.532AMS 700LGX, 717AMS 700CX, and 500 Coloplast Titan) met the inclusion criteria (Table-1). Mean age at the time of first device placement (61 years) was similar between LGX and CX patients (p=0.37); age was not available for Titan patients. Mean time between implants was shorter for LGX (29 months), compared to CX (39 months) and Titan (48 months) patients (p <0.001). Mean initial length of LGX cylinders (19.7 cm) was shorter compared to CX (20.0 cm) and Titan (20.1 cm) (p <0.001) patients.LGX CX Titan
LGX CX Titan
Mean initial cylinder length, cm 19.7 20.0 20.1 <0.001
Mean change in length, cm 0.6 0.5 0.5 0.86
Mean percent change in length, % 3.3 3.6 3.6 0.77
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5678524/
In 29 months the LGX grows just about as much longer as the CX does in 39 months and the Titan does in 48 months. So in 48 months 4 years the LGX grew an average of about 1cm 4 tenths of an inch. At that rate it would take more than 20 years to make the 25%. I'm 66 good luck with that. I'll stick with VED. 1 5/8" in less than 2 months.