TweetSparta Kraken. Very smooth and it doesn't hit you like a brick in the head. A bit pricey but there have been some bogos at 50% for the second . Haven't tried it yet but Olympus Reign has a good profile and a lot of deals on that one. The thing I worry about is all their products I've tried in the past are quality but taste rancid!! Mesomorph I like too but be careful as it kicks in very quick.