The best-selling Aneros Helix is part of the Next-Generation line which includes the Maximus and Eupho. The Helix is aggressively shaped and angled, providing immediate pressure and tension on the prostate and surrounding area. It requires less patience and practice to realize benefits. The Helix was designed based on feedback from our customers and several additional design patents. It has a sharply angled stem and large bulbous head which provide a more "aggressive" prostate massage. The redesigned P-Tab provides a more focused external prostate stimulation when massaging the perineum. In terms of dimensions, the Helix is larger at the tip (1 1/16" versus 0.9" on the MGX) and is more angled to provide a more vigorous massage. However, the mid-ridge is slightly smaller (1/16" smaller) on the Helix. A fusion of modern engineering and ancient eroticism, the Aneros will enlighten, enhance and expand your world of pleasure. The Aneros is a wonderful addition to your sex life, with your lover or on your own.