Vista basic is just the front end no Aero and no multimedia extras. It depends on use if its just for an office machine then basic would be ok . Home premium has the media centre extras
http://www.shopacer.co.uk/pp/Acer_As...LMi_Vista.html something like this maybe
http://www.acerdirect.co.uk/Acer_Asp.../version-1.asp or maybe this