Do you plan on making it into a reef someday? If so you might want the Reef capable, but then again depending on how long you wait before making it a SW you might need new lights by then anyway.
We are going with (2) 36" Marineland Double Bright LED's on our new 300 gallon Deep Dimension tank. Here is a photo of the lights on top of our empty tank. These lights aren't SUPER bright, but we're not looking for overwhelming lighting anyways. I'll try and snap more current pics, now that we have the background painted black.