Could you give a bit of info on those pcbs? Like what diodes do they take in what combo and price and aource? They look really nice. I quite like the 4up options
I bought the 16 diode boards from
adurasolutions.com
highly recommend them but there's min orders it was 120 for 28 I think like 2 years ago, it been a while. Those 4 up copper ones I use are my favorite. They come from
20mm MTN Quad XP / 219 DTP Copper MCPCB
www.mtnelectronics.com
The 4 up have been sold out forever they must have just restocked they will not last long. I'm sure if you talk to someone you could get an even better deal
They can be made either parallel or series, with these little bridge things come with em. Any 3535 with isolated thermal pad will fit, nichia 219c or 319at, Z5M, xpg,xhp35,lh351 there are hundreds it's like a standard size.