I have one blue XP-E2 and one blue XP-E I would like to use and need drivers for them.
I’m not sure what current should I go with. I see recommended is 1A, but is it safe to use more?
You can go up to 1.5-2amps with mcpcb and good heatsinking. 1-1.5 if you are unsure.
So I guess that I can use 4*7135 in P60 and 6*7135 in S2 lights.
All I can comment on is my own experience, but I built colored XP-E and XP-E2 lights, all with Qlite drivers in Convoy S2+ hosts. Based on djozz’s testing here, I used the full 3 amps (8x7135) on the XP-E2 lights but only 1.9 amps (5x7135) on the XP-E lights. They’re all on solid copper mcpcb’s, carefully assembled, all that good stuff. They work fine, never given me an issue.
Thank you for information.
I will just build it and see what happens.
XP-E with 4*7135 in P60
XP-E2 with 6*7135 in Convoy S2
Copper mcpcb is in all my lights 
DTP and copper MCPCB are different things
you can check if its DTP if the center pad is electrically connected with the rest of the star
DTP can be driven harder than copper with insulated middle pad
This. ↑
A white LED is just a blue LED with a phosphor coating, so they’re essentially the same.
I try to not drive my white XP-E2 more than 1.5A, preferably 1.0A, because it’s already near peaking at the brightness curve, ie, more current doesn’t yield much more light, and past a certain point light output even falls with increasing current, even if the LED itself manages to survive.
Lexel you are right. I meant DTP.
I always put DTP board when I mod lights or make them from hosts.
Lightbringer didn’t know that about blue and white.
I have white XP-E2 on noctigon in one of my lights and it works with 2,1A (that’s the only driver I had at the moment that would fit and didn’t want to unsolder 7135’s).
This time I will go with 5*7135and see what happens.
Actually, when mounted to a dtp mcpcb and heatsinked well, xp-e2 color leds will peak lumens at about 2.8amps.