If I were you I would consider some of the rechargeable options, since it seems you like powerful vibrations I would highly recommend the We Vibe Tango or the We Vibe Salsa. LELO Mia is also a rechargeable bullet style vibrator that recharges but it's less powerful than the Tango or Salsa.
the high intensity bullet is no different then most bullets sold on this site as well as others. Just try some of them out. But if you are looking for something more intense and higher quality, try some of the ones that sexyfun mentioned. You can also go with a Hitachi, or fairy wand.