MEDS OR NO MEDS??

Haley
Hey everyone! 
I was hoping on getting some feedback. My hubby and I are doing our first round of IUI next month. Our doctor is letting us decide whether to do meds like clomid and letrozole or to just try the IUI based on my normal cycle days. The only issue we have conceiving is hubby's motility being super low. Does anyone have any info from past experiences. ANY extra knowledge is totally appreciated as we are having a tough time making this decision.