Dumb 6-SSD RaidZ1 vs. RaidZ2 for mixed-load work and gaming question.

I know, I know, mirror pairs gets me more IOPs, but honestly even SATA SSDs have a crapton of IOPs as it is, and six 1TB SSDs means we're comparing 3TB as mirrored pairs to 4TB in Z2 and 5TB in Z1.

My only concerns are that I don't 100% trust four of the SSDs in the system, which is why I'm leaning slightly towards RaidZ2. Those four SSDs were also bought in pairs, which means that there's two sets of two where each pair has about the same wear leveling and is probably from the same batch, so if one member of a pair goes, the other is likely to follow. I can probably mitigate this possible failure mode by making sure my home server has enough bandwidth to handle daily snapshots from my desktop, though, which makes me lean back towards Z1 for the extra space. That extra terabyte is really nice because I've got a Steam library of, uhh, six hundred games. ^(please gaben no more steam sales :'()

The pool's heaviest use-case will be gaming. The programming I do on the system really doesn't eat a whole lot of disk space and isn't very I/O intensive.

I think I may have asked a similar question before, but that was back when I was thinking I was gonna do everything with spinning disks instead. I decided on going pure SSDs when I realized how cheap they were getting. On the "SSDs are cheap" note, everything is TLC nand, not QLC, I like me some longevity.

So, basically, would people recommend Z1 or Z2 for this? Is there some consideration I'm missing?