I have been using the method 3-style for over 2 years,
and I have settled in the range of 25-30 seconds. I wish to permanently become sub-20, and for that I am planning to undertake the uphill task of making, profiling and learning, and getting mastery in the 5-style method for both edges and corners of a 3x3 Rubiks cube.
A visual picture of how one 5-style algorithm will affect the cube: A total of just 5 algorithms will solve any normal 20 target 3x3 scramble.
The useful tools of edge swapping, and doing many kinds of parity algorithm remains the same, as it can be used even in the case of a 5-style solve, near the completion of the cube.