Is it worthto have psm1 and pspo1 both

Hi,

First of all i am thankful to all who have shared their exp in this forum.it really helped me to pass PSM1 test. Now i would like to get some input whether having PSM1 and PSPO1 both is worth. I am confused between PSM2 and pspo1. I am confident for pspo1but no ready to crack psm2. If psm1 and pspo1 both will be worth i will go for that. Please suggest.