Which open-source wallet do you personally recommend?

I'm looking to change my wallet and would like the community to share their thoughts and experiences on which open-source wallet they use and recommend.

For those who don't use open-source wallets, why is that and how do you trust that your seeds are not known to the software creators?

Thanks!

Ps. I've gone researched all the wallets on Ethereum.org, yet I'd like to hear some personal experiences.