i got the 2 mode, and put in the Q5 it is awesome. i do not have a p60 bulb light but i'm waiting for my Dexlight to come in to compare it to another P4 and see where that goes
so far its pretty good, build quality is onpar or subpar as there is something rattling but this doesn't fully affect the power of the light, i dont however like that its unregulated
it throws very far and the side spill compared to the previous emitter is outstanding, pointing at a wall 15' away i can light up the whole room which is purely amazing i can't believe its power i can shine a stop sign from 2 blocks out
the next thing i want to get is probably the wf-502b ultrafire since that is a p60 light. or maybe the 3xSSC kaidomain light its up in the air i highly reccomend this light and swapping it out for a Q5 you can't go wrong.
one more note is that one my protected 18650 goes in and out fine but another is a bit on the wide side.
another thing thats peeving me is that this light can only be so bright, and compared to everyday walmart incans this thing is a beast but i want more power! i'm feeling the bug coming along