Present for 21year old sister

[David Arnott]

I have a sister who is going to be 21 in a week. I need to understand what is the best box of white or red wine that I can buy for a total of £120 which will mature within 4-5 years? Any help would be greatly appreciated. Her normal preference is French wines but I understand that there could be better bottles from different countries so am open to suggestions. Thanks