My take is that if you use it for supervized coding then max5 is more than enough.

It becomes a bottleneck when using agents that spawns to tackle larger tasks and do random trial and errors to correct itself autonomously.

As a dev, understanding the code is a vital part of my job, hence I cannot let agents write more than I can review (and not only review, but fully understand). So I'm also not benefiting from x100 coding speed, but I'm not losing control either.