Why I’m leaving injections behind for implant.

[LGXDownunder]

For those that have done the implant after using injections, how do you find erection quality and sensation between the 2?

Erection quality is 1,000 times better for me. Erections are on demand and almost instantaneous with zero preparation.
In my experience both size and hardness are far superior to Trimix induced erections (for the short time that they worked for me).
My implanted penis after cycling and healing is back to my pre ED size when erect and much larger flaccid.
Restoring sensation was harder won. After surgery I did have some numbness on the underside of the shaft above the penoscrotal incision.
That persisted but very slowly improved over many months. But I didn't lose any sensation where it really matters and could orgasm during PIV sex fairly consistently after about 6 months. From about 9 months I could orgasm 100% of the time from either sex or masturbation.
Everyone is different, but for me there is no comparison.

[1sfman]

The sensations I now experience are way superior to those I had with the injections

Would you elaborate, please. I'm on injections and suffering from anorgasmia. AFAIK, the anorgasmia predated beginning ICI, so I do not attribute the anorgasmia to the injections. But, who knows? When you refer to "sensations", are these the same as the sensitivity that eventually brings you to climax? Did you have difficulty climaxing on injections? Thanks for sharing your experience.

Yes, the "sensations" are those that bring you to climax. It may be different for others, but the injection made my glans feel sore, like I had been pounding away for hours. That soreness certainly was a distraction at best, and a climax killer at the worst. I'm sure that for others, they may not get that soreness, so not an issue for them with injections.