I am currently wearing this base too, so i'll try to answer your questions.

weird_fish Wrote:1. Does the hair lay naturally with this base? How is it compared to sfs in this regard?

Hair on this base lays and behaves just like natural growing hair. To me it's better than lace in regards of hair behavior.

Quote:2. Does the hair shed more or less on this base than sfs?

My hairpiece is just a month old and it still doesn't show any signs of shedding.

Quote:3. Is the hair injected? I assume that this is good for not worrying about knots and having a 'growing out of the scalp' appearance?

Yes, the hair is injected and scalp looks OK. But not as good as I-Lace scalp looks though.