Here is an article from BWB a couple of years ago. It still has some good information. Since this article, Honda has released their new BF-90 which is an outstanding outboard....
Personally, I have had great luck with the Nissan/ Tohatsu TLDI's in the past. And for nostaligia, I just bought one of the last brand new Johnson V-4 2-stroke carb'd 90's. I am completely in love with this Johnson 90.