> They perform at a somewhat equal level on writing single files.

That's not the experience I have. I had it do more complex changes spawning multiple files and it performed well.

I don't like using multiple agents though. I don't vibe code, I actually review every change it makes. The bottleneck is my review bandwidth, more agents producing more code will not speed me up (in fact it will slow me down, as I'll need to context switch more often).