zkSync

What's everyone favorite thing about zksync?

the cheap transactions are something everyone loves

Posting state diffs instead of calldata - this makes certain calldata-heavy transactions much cheaper than on most other L2s

era?

boojum, very interesting VM (everything is a smart contract, EVM-like behaviour is implemented using system contracts), built-in AA is also really cool, simple to understand. even though it’s type 4, you guys make lots of dev infrastructure so experience is comparable (and sometimes even better) than type 3s+