Ha ha I think you guys are giving me a little more credit than I am due!
Matt- The fluval CO2 units are not that bad. They are actually quite good. They are however horrendously expensive for what they are, and I can guarantee the same results on a suitable sized tank with DIY CO2.
I explored the option of putting a sodastream CO2 bottle on the Fluval units, but the thread size is completely different and that won't work.
If you look at ordering a professional unit, keep me in the loop. I might want one too, but it's not the regulators that are expensive, it's the CO2 bottles. Why do you have sticky messes with DIY? I use them on almost all my tanks, and It's clean as. I do go through a lot of sugar though, but that doesn't really hurt haha.