I just recently upgraded most of my modded mags to aluminium reflectors. In my opinion, the smooth Kaidomain reflector (with removeable Cam) throws roughly the same as the stock reflector with the cut off cam. The beam pattern certainly looks about the same. The OP reflectors also throw really well and have a nicer beam, but it is harder to find that sweet spot because of the fuzzy edges of the beam.
For the Malkoff, you are probably best off keeping the stock reflector with cut Cam, mine used to throw perfectly anyway, there is maybe a 1% increase. The main benefit of going for the Al reflectors is that you don't have to worry about heat at all, and you don't have to mod the reflector in any way.
The only way you will get significant throw would probably be to get a deeper, wider head with reflector (maybe a 2.5 inch throwmaster or similar) but at 260 lumens it may not be worth all the extra cash for the small amount of extra light. You may have limited success with a rebel reflector (if you can find one) since they are deeper, but I do not know if the dropin will fit in a rebel body/head, or if the reflector will work at all. maybe someone else can chime in about the rebel reflector
My personal set ups now have either a smooth or OP al reflector and UCL lens and they seem to be fine.