Hey Rajul

as far as the speed of the boxxer, I don't think it is any slower then the others that I have tried. That said, I only use it on smaller planes ( fuel tanks). Now I fly planes that ues 5%, 10%, 25%, and gasoline. I can't see having four electric fuel pumps so I only use the electric on the 10% fuel and have found the hand pumps very easy to use. As I head to the 40% size planes, With there large tanks I may get a electric Purolator fuel pump. The Purolator pumps come in two speeds/models and sell for about $25.00 at any auto parts store. What size planes are you flying?

Note hand pumps in bottom pic.
Doug