SciencePG is very good. All my experiences such as first-time work, helpful review, fast response, patience with successive revisions/corrections of material to be published are very nice. I expect that SciencePG would still be open to new authors even if/when they grow big.
Compared to other Open Access journals, submitting researches to SciencePG journals has many advantages such as fast publication, superior service, cheap publication fee, and etc. My experience in SciencePG is excellent because my research has been published in one month and my paper has been sheared, read and cited by many authors. My expectation is that in the near future SciencePG journals obtain an impact factor and reach a higher standard.