I'm aware of other brands like Mobil 1 and Royal Purple (among my faves) but where I am right now, I only have these choices and was hoping to get some feedback on which you might think is a better choice for me: All are 5W30. It's not for racing. Just everyday spirited driving. 1. D-Ester (actual name of the engine oil) 2. Liqui Moly TopTec 3. Castrol Edge These are the ones I can choose from. Please give feedback, anything from company reputation, contents of the oil, price per bottle (1L), advantages/disadvantages, etc. Like I said, I used to use Mobil 1 all the time and it was great. For a cheaper more basic oil I used to use Quaker State. At this time, D-Ester, Liqui Moly TopTec and Castrol Edge are all I can choose from. (There was also Venol Synthetic and Ardeca, but those I think are mainly for diesel engines).