Just pony up for the Motive pressure bleeder now and save yourself some hassle. I've used the Speedbleeders and they were OK, but you have to reseal the threads every so often to keep them from leaking air into the system.
A better option is the Earl's solo-bleeders. Same concept as the Speedbleeders, but they use a spring loaded plunger that actually seals against the hard line between pumps to prevent air from leaking in, instead of thread sealant.
All that said, I could never get as good a pedal with either compared to enlisting my wife's foot, so cobbled together my own "test version" of the Motive pump one weekend using a Home Depot bug sprayer. It works the same as the Motive, but in hindsight I would have just bought the Motive for an extra $20 and avoided the time/hassle.
The pressure bleeding gives results as good as the foot method, and it now takes longer to get the car on stands and remove the wheels than the actual bleeding process. I also don't fill the pressure bleeder with brake fluid, but instead just top off the master cylinder and use the pressure bleeder to simply pressurize the system. Makes for much easier cleanup. Just keep an eye on the fluid level of the master cylinder...
