I am looking for a Regenerative Blower that puts out ~90CFM at 40" of pressure. I am looking at the Sweetwater S45 amd the Gast R4P. Both seem to have roughly the same stats. I haven't been able to find many reviews to swing me one way or the other. Any advice on which brand to go with?

Sweetwater brand is the name Aquatic Eco-systems Inc (Florida) used for their house brand compressors made by GAST Mfg (Michigan). They are basically the same units. Not sure where you would get the better deal on a unit when you are in Canada.

That's helpful Bill, thank you. I'll see which one I can get most inexpensively.