Live rosin is going to be the highest quality of oil you will find in a pen/cartridge. This is solvent-less, meaning no chemicals were used to extract, only heat and pressure. Live Resin is the next best. With either option, look for terpenes over 10%. This will typically be accompanied by lower THC% but worry not, THC is not everything.

Terpenes are the “chemicals” (naturally occurring) that 1. Give weed it’s flavor and smell, and 2. Guide your high along with the THC. Different terpenes will give slightly different effects. These are what determine if a strain is a sleepier one or more energetic one. These usually follow the Indica/Sativa “rules” of Indica generally being sleepier and sativa generally being energy but not always. Anyway, higher terpenes will give a stronger and more pronounced high. And different terpenes give different feelings.

So, look for Live Resin or Live Rosin, with high terpenes. Keep in mind rosin is a bit stinkier and less discreet if you’re trying to keep it unknown. Avoid distillate carts, or oens with over 90% THC, these may give a fast head rush, but drive up your tolerance without giving any long lasting high.