Dear Mike,
Which model you are looking from BBraun?
Infusomat-P or Fm
perfusor fm or compact

There are differences in price,specifications, quality and options available.Please be clear about your requirement first ( ICU/ward/type of medicine/flowrate required/consumable ( syringe /infusion set) availability in your part of the world) then finalise by keeping Mr.Ashoke's and Ms.Mini's tips in mind too.
Best of luck

Sajeev