I'll start off by saying that I am not a fan of most Indica strains. It's not that I think they are "bad", but I find that Sativas help me more as an individual. That being said, while every marijuana strain is different and unique, Grandaddy Purple was easily the most unique Indica strain I've ever smoked.
The high comes up very quickly with this strain and gets you very stoned, very quick. But after about 20 minutes, the high will decrease in intensity just SLIGHTLY, and remain there for another hour and a half. It has been roughly 15 hours since I last smoked this and I can still "feel" it in my system. I'm not high anymore, but I can definitely feel the lasting relaxation this strain has given me.
While giving you the typical "couch lock" stoned feeling that high end Indica strains usually give, I didn't feel completely incapable of functioning. Most high end Indica strains tend to get me so high that I can't move, but this strain got me very high while still letting me retain the ability to function and do things IF I had to. That being said, I wouldn't ever smoke this with the intent of doing something very involved later in the day. While I could still function if I wanted to, this is still an Indica, and I would rather spend this high watching a movie or just chilling with friends.
The taste was one of the most pleasant parts. It was very fresh and full, while also having that "purple" taste that can only be appreciated by people who have smoked it. It doesn't taste like grape. It tastes purple.(How is that for a high description?)
Overall, I'm more happy with this strain than I thought I would be. It does not take much of this pot to get one extremely high, so it was very much worth all of the cash I paid for it. Definitely the best Indica strain that I have had and I recommend it highly for any Indica partaker.