Preparative or Analytical HPLC

We would like to buy an HPLC system but I do not have any experience with preparative HPLC. We aim to analyse secondary metabolites from medicinal plants, collecting the compounds and then employing structure elucidation other systems. Do you have any suggestion about preparative ones or both together, analytical and preparative for phytochemical analysis? If so, let me know the system(s)- (brand, model etc)