I couldn't tell you the brand name of all of my jacks, some of them are older than me. I know one is a smaller craftsman almost 20 years old, one is a 3 ton purchased at NAPA within the past 10 years, and the others I have no clue of their origin. Hydraulic jacks RARELY go bad, and considering you are never under the vehicle while the jack is in use, the jack is really pretty irrelevant to me. My concern is primarily with the stands since the jack is used only to raise and lower (which you will never be under a vehicle while doing) while the stands support the weight long term while you are working beneath the vehicle.
Any ol' jack will do, its the stands/ramps you don't want to cheap out on.