How easy it is to oxygenate with the setup is just one of the benefits of using it. I think people undervalue that aspect until they've had a chance to experience it.
Also, those red O2 bottles only hold 1.4oz of O2. IME, only enough for a few batches IF you brew higher OG batches (above about 1.060)... Get a welding O2 size tank (forget how they're rated) that's about the size of a 10# CO2 tank, and you'll be set for many, many batches. Of course, you'll need a different regulator, and to do some tweaking, but that's just part of the fun. :rockin:
Where would you get one of those and where would you fill it? I've never noticed them in any hardware stores I frequent. I use the Home Depot refillable tank that says like 50% more but only costs about $2 more ($9.89 I think), but between that and little CO2 canisters I use, I feel so wasteful.