Quality and transfer

After quickly received my first camera ION FILM 2SD I returned for exchange because random transfers on my Mac (of 50 pictures scanned correctly transfer 10 to 15) .I quickly received a new device and then I say "AMAZONE hat on simplicity and speed for the exchange."
The new device has the same disadvantage especially when I go on a blank card, the first 10 or 15 photos do not transfer and there is often a "hole" from 2 to 8 pictures in the middle (between 25 and 30). It is therefore necessary to rescan without clear if one falls into the 10 photos from the hole.
In terms of quality it is transferred using slides, a good photo editing software is essential.
One plus speed but may cause problems.
Despite this I scan and rescan my slides quietly (I'm retired) .If someone or AMAZON has a solution for these problems I'm interested.
Bernard

Ion - Scanner Negatives And dispositive - Ion FILM2SD -