I use the Motiv one, it's sweet, I've used it on about 6 cars now, I got the one with all the adapters and searched online and found a 20% off coupon code with free shipping. It's been very very valuable

I've tried the MityVac's also with no success, they really suck. You can't keep the system pressurized right so even after using the hand held ones I end up having to have someone pump the brakes. The Motiv works flawlessly, I was very excited about ordering it and it's proved its usefullness many times

I use pressure bleeders. I am lucky to get to use the bg brake sytem pressure bleeder from work for free.
I dont know if it makes much difference as far as the quality of evacuating the old fluid out, but I prefer to push it out instead of sucking it out.