Meshy AI

Meshy is the best. When factoring in things like its great community, the amount of features, easy of use and also the huge amount of free credits given away.

Mesh density is alright — maybe a bit higher than needed

Fast and easy to use. Recently got a year subscription to generate some models to 3D print.

I was never satisfied with the results of this site. The mesh results were very mushy compared to the ads shown. I do like the interface but I don't recommend this one.

It's generally okay, but sometimes it hallucinates a lot; however, it usually creates an acceptable model. It has an educational prescription as well.

Another engine that I"m familiar with. I tried is so many times but I can't get good results. The engine doesn't do good guesses of the other sides of the model. Maybe it will get better with updates.