Suggestions for COB purchase

Hello folks. Looking to buy some cobs to start growing again (been aways for a few years). I've done some research in this forum and I must say the amount of information here is impressive. So when looking at Digikey and Mouser for available COBs I have these options:

CXM 22 gen 4 (more units, better spread)
CXM 32 gen 3 (fewer units, higher intensity, no gen 4s yet)
Vero 29 gen 7 (leaning towards these)

I'd like to hear your thoughts regarding these and whether I should also consider Citizen CLUs. Also, I am still confused about CRI and temps. I see that there are some heated discussions regarding this within the forum and I am under the impression that I should go for 80 CRI @ 3500k to go from start to finish. Should I opt for separate temps instead? Like 2700K for flowering and maybe 4000k or 5000k for veg? My budget is around 400 CAD for the COBs alone and will be getting drivers later on. I have no limitations on the growing area as I have dedicated my basement to this project and will adjust it accordingly. Thanks in advance.

Why not use Samsung led strips H-inFlux or F-Series gen 3. Or Bridgestone if you must. It's usually a lot easier to construct a light using led strips rather than using individual COBs

Thanks for the reply. Just had a look at these boards and they seem to be a popular choice. I'm considering this option SI-B8U521560WW. They seem to produce the same l/w as the cxm 22 gen 4 but give better spread. So imma go with the quantum boards.

The original Quantum Boards, https://horticulturelightinggroup.com. The SI-B8U521560WW Samsung strips are a common option, but you might consider the 4 foot lengths, less wiring. 3000k-3500k are preferred for a veg-flower light, and I think more people are using 3000k these days. I believe 90 cri is preferred for flower, but these aren't big differences in spectrum.

A basement can be a cool place for LED, they don't heat the plant above air temperature with infrared like HPS/MH. Leaf temps under LED are about 1° C below air temp, so the girls need higher air temp, around 29C is good. And VPD is importent, http://www.just4growers.com/stream/temperature-humidity-and-c02/vapor-pressure-deficit-the-hidden-force-on-your-plants.aspx

Thanks for the tips. I'll keep the temps in mind. My basement is usually cool and damp. I think the humidity would cause problems. I'm also considering getting a dehumidifier.

CXM-22 Gen 4 3500k 90 CRI is what I chose.

With the 3500K I noted that you gain a significant amount of blue and don't hardly lose any red compared to the 3000K.