A service that has no pride in its services will lead to a lot of problems. That is one thing you need to be interested in. Some ranks that you can get a lol guide (롤듀오) to help you with are as follows:
Substitute ranks. Since it is a proxy rank, the best services will have elite technicians that can work on to provide you with accurate and winning rates that are high and reasonable in price.
Duo ranks. It is mostly duo ranks that goes through with only the preferred edition numbers whether or not you lose or win. This service directly duo with challenger knights alone. The best services will offer you with a driver for your specific position.
Multiplier duo rank. This service that the lol agent (롤대리) offers will make sure you win a lot of victories. You can duo directly with the service challenger and be assigned an ideal position driver.
Victory guarantee duo rank. This service is played with ideal number of players and also offer you with more victory if there is any defeat.
Placement tests. There are also lol agent (롤강의) placement tests that stands for a start of seasons based on tier and MMR losing or winning criteria. Handful of elite challenger articles from the right service will ensure your first button is put. Additionally, the right level of satisfaction is guaranteed by high winning rates and quick work done.
Always make sure you stick with or to that specific service that has been provided with a league of legends instructor. Such services will provide you with the right play style to make the most of. It is time to improve your play. So make it now.