Structural variant calling for low-coverage PacBio data
There is an evaluation of PB Honey and Sniffles algorithms for low coverage PacBio datasets in this preprint and another evaluation is shown on this poster. Both reports agree that optimal is (surprisingly) combination of PB Honey and Sniffles.

Author of Sniffles have benchmarked Sniffles against PB Honey, where he shown that Sniffles performs significantly better. Take a look on this presentation (slide 15).

Another option is SMRT-SV, but I am not aware of any benchmarking.