Suarez was brilliant as a lone man last season when Studge was out injured (only missed nine games though). He is better in a front two or three though.
There are a few others who I think would have been good as a lone front man but they played before the lone striker became fashionable. Alan Shearer in his earlier days would have been able to do it. Ian Rush would have been superb at it (although he effectively did play it with Dalglish being his partner and dropping into the hole so much).
Stan Collymore would have been great in the role too, he could do everything but was more interested in "other activities"