Some of my favorite lights for close up use are
McGizmo Mule high CRI - no reflector, super smooth flood without hot spot, high CRI for accurate colors.
McGizmo Haiku XM-L - cool white but nice tint, reasonable amount of flood covering a large area.
Zebralight H501w - superb flood lighting, neutral white tint pretty close to high CRI.
4Sevens stainless steel Preon ReVO neutral white - nice flood even though it uses XP-G, tint a little too yellow instead of warm but it is still acceptable.
HDS 100 HCRI Clickie - floody enough, high CRI, multiple output control from lowest of 0.07 to 100 lumen.
HDS R1B Rotary - floody enough, rotary control pretty straight forward to use.
Overall, I have quite a few other lights, including some Surefire, that are compatible with the Surefire F04 diffuser. When the diffuser is added on to the lights the beams are transformed into a nice smooth flood beam.