The vibrating toy that is great alternative to what you're using and loaded with several programs, silicone and rechargeable is of course the Billy
. The price tag is a bit higher, but the build and quality is worth every penny.
As for non vibes I love the Ultra skin cock
however compared to the Vibe you're using it's double the size and it will defenetely take some time to get there.
As a smaller alternative you can try the UR3 raging ballsy
- it's from the same material as the one above, but smaller in it's dimensions, has a good curve to hit the prostate.