This had me rolling.
Currently I'm using a large 300w black box (Viparspectra). The PAR output is absolutely nuts on this thing....but (as we can see in the BRS video on them, their PAR is really localized compared to other options.) For now, while the tank is young and I don't have that many corals...I'll be using it. However, I DO plan on upgrading to something with more channels of light, and more options like WiFi etc. You could always spring for a cheapo for the time being, then upgrade to your dream lights when you've got the $$$.