Back when I used to smoke (I don't partake in any illegal drugs now, just my personal choice), I used to prefer Sativas/Sativa dominant strains, if I was getting high alone and Indicas/Indica dominant strains if I was in a group.
That being said I'm on the east coast and most of the herb I've had was Indica/Indica dominant and it was harder to find Sativa/Sativa dominant strains and when you did it was a nice surprise.
The best strains I've smoked (I have no idea about the names except for one which was Trainwreck and that was very nice) were a combination of both though more Sativa dominant with just enough Indica so it wasn't like a pure Sativa high where I'd get all paranoid, get bad anxiety, and not have a fun time.
I don't mind herb that's more Indica dominant but I like it just to make me lazy and not glued to the chair/couch all night.
I agree with the person who said that it's better to smoke Sativas during the day and Indicas at night when you're relaxing before bed.
I used to love taking opiates (low doses of codeine and oxycodone/hydrocodone) and smoking an Indica and rubbing my opiate itchy body on the carpet and imagine getting tied up and paddled/whipped! *growl*