First off avoid reds if you're looking for more euphoric/buzzy, you should be looking at white and some green strains for that. I'm a new customer to KUK so last week I ordered the maeng da sample pack which I would recommend because the price is decent and you can find iut for yourself what you like (you get 25g of 6 different strains). So far I've found the white strain (white indo) and both green strains (green malay and green indo) to be pretty good in terms of energy/euphoria.