The original PS is the most fresh green of the three. It is very green actually. This is a good choice for office or casual. Its not a dirty green like LV Yerbamate but rather a fresh one. You will probably like it. PS Extreme is the second one and while it is not bad, I don't think it is that great. It is a better version of Burberry touch with tonka and heavy musk in the drydown. London is another fresh, wearable scent but not green like the original. Hope this helps.