Well since you mentioned the Widow Maker there is also the Brushless Shockwave, which I have and love. The only real difference between the two is the hardware and what the hull is composed of. The Widow has a rudder and is fiber glass, where as the Shockwave has a steerable drive set-up, hull is abs, and its slightly larger.

The Shockwave and Widow come ready to run on 2s, which is good for around 30mph, however, I am upgrading my esc to run 3s so hopefully with the right prop the boat wont be to far away from the titan in terms of speed.

If your not going to want to mess around with any upgrade modifications then I would go with the titan, throw a 6s in her, and watch it fly.