"Sierra" + "Amiga" = "Unplayable drivel"
For me, Sierra is synonymous with 'Crap Amiga games' so I have not voted. Generally Sierra-games tend to be boring, slow, and not suited for Amiga. The only Sierra games I have ever played on the Miggy were Leisure Suit Larry 1 and Police Quest 3.
I found Larry 1 mildly funny but was irritated by the parser.
Police Quest 3 was a REAL unplayable beast on my Amiga. Everytime the main hero entered a new screen I had to switch discs. The game stayed for only 2 days on my discs..