Who has used both? What are your thoughts?

I have used both as well as a Hans.

I used the Simpson hybrid for several years and liked it a lot. Mine was setup with their quick click latches on the helmet and loops on the tether, it was an upgrade.

When I built the new car I had to switch to a -15 suit and being thicker, my old Simpson hybrid was too tight around the chest to fit and work correctly.

I could have gotten the next larger size but just wanted to try the Necksgen. No complaints and a little easier to put on and connect.

If I had one complaint about either, the Simpson Hybrid being worn like a vest that sometime you have to get it untwisted as you’re trying to slip it on. I also found it would get caught on the top of the shoulder pieces of my Sparco suit. But to me that wasn’t a big deal.

Don’t think you can go wrong with either one.

I've used both and prefer the necksgen. I find it easier to get on and clip.

The Necksgen is easier to get in and out of IMHO so for me that was my choice.

I've used both and much prefer the NecksGen Rev 2. The adjustable tether and ease of use makes it preferrable IMO.

I currently have both. I'll offer you a different opinion than the others above.....I prefer the Hybrid. Yes, it's a little more work getting on and off as it's a complete harness around your body. But once I'm in the car, I prefer the way it feels.