Fantasy Baseball question - need a 1st Baseman?

I'd go with either Lopez or Marte if you like prospects. Lopez is hot now hitting 6 HR in the last month. Marte has 2 in 3 games and is a highly rated prospect. Votto, Ortiz and Konerko can all hit HRs but not much more than Lopez and they will all hurt your BA more than Lopez or Marte.