Malkoff MD3 Wildcat in warm white - perfect beam, great tint, over 400 lumens, won't overheat, low beam is not too bright, simple UI, reliable, run time over 60 minutes on high, good ergonomics, takes 18500 (18650 in MD4 body), Lego options with 2/3/4 cell bodies, outstanding warranty (blown up with C4? no problem.)
The only thing I would like more is even better tint (as close to sunlight/blackbody as possible) and better efficiency. I'm watching for the warm white XPG version :-).
A little smaller and easier to obtain: Malkoff MD2 with M60W or M60WF and hi-lo ring. Run time over 90 minutes on high. Haven't seen tint of M61 in real life yet, but will certainly buy warm white M61 when the warm white XPGs become available.