I think it pivots the best, the blades seem to last a lot longer, and I've never sliced my noggin on a Venus head. Awesome razor, they should of marketted it for both sexes.
They could call the men's version 'Mars.' Sorry, I couldn't resist the obvious bad humor.
Lance, the Tri-Flexx are basically generic Sensor 3 blades. They fit any sensor handle, and the sensor blades will fit on the Tri-Flexx handle. You can also use the Tri-flex blades with the sensor adaptor on the headblade.
Thanks bro. Yeah, I found out the low down on it today at the store. I just went ahead and picked up the Schick Extreme 3 refillable blade. I gave it a try this morning and it worked pretty well.