Which is the best method to compare the differently expressed genes between 2 clusters `sc.tl.rank_genes_groups` or `MAST.zlm`?

Hello:

Which is the best method to compare the differently expressed genes between 2 clusters sc.tl.rank_genes_groups or MAST.zlm (zlm: Zero-inflated regression for SingleCellAssay in MAST: Model-based Analysis of Single Cell Transcriptomics)?

Thanks
Dan