WP Fastest page builder (SEO Friendly)

I am using WPBakery and feel it good

I recommend Flatsome theme for WP.
It has awsome features.

Oxygen? I will check it out

have you tried X Theme?

Oxygen Builder it is. Elementor is good but not in speed & optimization.

I've tried most of them & I can say Oxygen is by far the leanest builder I've ever tried. They has almost no bloat & only output things you need. All my sites with Oxygen load not more than 2 seconds.

The downside is, Oxygen is not beginner friendly unlike Elementor. You need to wander around a little. Also, Oxygen is technically a theme builder rather than a page builder. It has higher chance of conflict with other plugin.

Both Oxygen & Elementor is my current favourite. I used them on different project based on their pros & cons.

I personally use ELementor and Elementor pro, but I'm looking around for something different because they insert too much unuseful code and request in the websitepages.
I use it to create websites and landing pages.
I agree that Elementor is powerful, compatible, easy and has a lot of cool feaures, but I think that in 2020 we must have a better balance with cool features, size of code and speed.

I will try Oxygen to see if it is really so good. I hope so