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You should look into Dash. It supports upto 400MB blocks and has 1.3second confirmation time and some of the lowest Tx costs: https://bitinfocharts.com/dash/

I love dash :) Knew it would rise with such great features. Part of my first EVER* steemit post, on the general crypto game:

https://steemit.com/cryptocurrency/@mikeparker/the-crypto-game-is-about-to-change

Read it. It's a really good post. Did you write anything on NEM. It's also really good. And it has some real mainstream appeal too.
Then again I found this disturbing info on a blockchain called ACC. Here is one link: https://steemit.com/cryptocurrency/@ronmamita/blockchain-video-promo-has-creepy-subliminal-message#@ronmamita/

This is not conspiracy theory. I had heard about similar attempts from Doug Casey. Now there is proof on what he was warning about. Hopefully you know who Doug Casey is; that guy and his team is amazing.

NEM I have nor researched. What are it's key benefits?

will checkout that post

I definitely know Doug Casey. Met him in fact.

Wow! That's great. I'd love to meet him in person. NEM's main selling point is using it is like using E-mail (like what Dash Evolution plans to do) and there is Proof of Importance which is far superior to PoS.
https://blog.nem.io/

OH so usernames rather than complex addresses? didn't know that; definitely a 100% needed feature before mainstream adoption