best N/A engine, for toyota Options

[Hanyo]

What is the best Naturally Aspired engine for toyota?

I hear beams and silver top thrown around. But what is the BEST? Which one has the most power to weight ratio? Most power after modifications?

Is the 7th gen gts engine the best n/a engine toyota offers?

[Coomer]

I've heard bad things about the 2ZZ-GE's design and components compared to the 4A-GE and 3S-GE. Isn't it a weaker aluminum block compared to the 4A and 3S iron blocks? I've experienced both a 4A-GE and a 3S-GE in my cars, and the 3S-GE felt torquier, but lacked the high RPM power that I get with my 4A-GE. I've never experienced a later-model 3S-GE or a blacktop 4A-GE though, but both the 4A-GE and 3S-GE are excellent engines.