I am not a Martini guy, but if you are talking about some kind of alcool I HAVE to drink before lunch, or dinner, I go for Bloody Mary or Mojito. BTW I appreciate more a glass of chilled white wine. Talking about some alcool you LIKE to drink after dinner I am an international drinker so anything goes if it's good: from grappa to armagnac, from aged scotch to age ruhm, and, why not a hot sakè? My choice depends on dinner, wheater, place etc. I mean I love scotch in Scotland and rhum in Cuba. Food and drink must match the landscape IMO.
SALUTE!