I don't really have a favorite strain that I can really pick for the simple fact that when I buy cannabis, rarely do people know what type they are selling and if they do give you a name, you can't proove that it is that exact strain anyways. This is why I think people who care about their smoking experience and high, should definately cultivate. Any strain that has a higher sativa ratio usually produces more of a head high. Indicas are known for their body highs mostly, but with hybrids you are usually looking at a mix of the two, with some effects stronger than others. This is why people choosing a strain should really do their research. Also earlier harvested cannabis will tend to give you more of the uplifting sativa high you are looking for, as there is less CBD and CBN which causes the very hazey, narcotic feeling. Nowdays there are so many starins to choose, it is really up to you to decide which ones are best for you.