I have an illuminite jacket bought on sale. For the sale price it's an ok product. The yellow is bright in daylight and it does provide a large (supplemental) surface area of reflective material. Besides normal bike reflectors I have several types of reflective tape on my commuter bike and helmet. The 3M types - silver and honeycombed are the brightest. The white is next. On my rims is black reflective tape (unobtrusive in daylight). All of the tape reflects best when light is pointed from eye level.
The illuminite jacket has bright daylight color, light weight, pockets, and is cycling specific. I've found recently that it does not breathe well and is not comfortable over a wide range of temperatures. I realized this when switching over to my Gill Morph (with pit zips).