Ouch. I was thinking of going the hydro route with my current Bee build, but I never looked into the cost. I am running an electric pump in my Cuda and it set me back a total of around $300. For less than half or a third of the price, why would you do anything else? Mine is very quiet and works flawlessly.

Maybe the hydro way has some benefits I am unaware of?

I guess if you are starting from scratch, the price difference isn't so bad (no booster), and might be worth it considering the brakes wouldn't depend on the electrical system. Either way you have a pump or two of good brakes if the system fails...