I go through a new-to-me-but-older-than-me car every six months or so. Pick it up (after selling the previous at a grand or so more than I had in it), fix it up, DD it a bit, get bored, and move it along. Pretty much every car gets a complete brake overhaul, so I've done my share of brake bleeding. I've tried all manner of gizmos and setups.
That device might be cool, but looks more like something that would take up space in a drawer for lack of need or lack of working quite like intended. It seems pretty rare that I end up finding the same size bleeders on each corner (remember, old cars with lots of history), and having to buy a $30 tool for all the sizes I encounter is not worth the trouble that device is not saving me.
I like the Motive Power Bleeder when I have the proper adapter (it seriously saves a lot of time and mess). Whether I have it or don't, I just stick a piece of clear tubing on the bleeder and loop it up to create a lock. The fluid flows up to the top of the loop, and that's all that's necessary to keep air out. While it's doing that, it also allows me to see bubbles, see the state of the fluid (for flushes), and keeps brake fluid contained. I bought a whole bunch of tubing a while back, and reuse it while I can or cut off a new bit when necessary. I can flush/bleed a car solo as long as I can figure out a way to reach the pedal and figure out how to see whatever corner I'm working on. If you're bleeding brakes, you probably already have a set of box wrenches, so the total investment is all of maybe a dollar plus whatever fluid...
