iccanobif

I have received both NSF & NDSEG and don't know which to accept. I'm doing cell microfluidics in a bioengineering department and am not sure which would be easier to upkeep (in terms of yearly reports). Does anyone know about this or have recommendations on which to say yes to? Note: I have already deferred the NSF 2 years due to Fulbright work, but the NDSEG I found out about today. Could I defer the NDSEG two years to get 2 years funding out of NSF and switch back to the NDSEG? Thanks!