The Instax Mini Link is a major improvement over the Instax SP-1/SP-2, which wasn’t very portable. I own both the SP-1 and SP-2, but because I rarely used either I am reluctant to purchase the Instax Mini Link myself, but if Fujifilm started with a more compact design like the Mini Link I might have brought my Instax printer with me more often to use instead of just using my Instax SQ2. Similarly, the Instax Mini LiPlay is very compact and will likely be a more popular option for those that do not want to juggle a smartphone and printer or pair their Fujifilm camera with the Mini Link.
Instax Mini Link: B&H Photo / Amazon / Adorama
Instax Mini LiPlay: B&H Photo / Amazon / Adorama
Color Film: B&H Photo/Amazon/Adorama
Monochrome Film: B&H Photo/Amazon/Adorama