FDTD Algorithms

Which one is the best (fastest, most accurate) for planar microstrip type problems? 1-Classical FDTD
2-ADI-FDTD
3-PSTD (Pseudo Spectral Time Domain).

Any thoughts? Thanks.

ADI-FDTD+sub grid+prony method

Thanks IICCEE, it is a precise answer and more than what i want. I also want to ask your opinion about PMLs for ADI-FDTD. There are 3 as far as I know:
1- Convolutional PML
2- Split field PML
3- Unsplit PML

Which one do you suggest in terms of ease of implementation, memory and other aspects? Thanks again.