Freenom own the TLD so you don't really have a choice. Every other registrar that offers the TLD is just going via Freenom anyways, and any major issues that affect Freenom will affect the entire TLD.
If Freenom the registry starts having problems then yeah. Right now it's only Freenom the registrar I think (they're required to operate as separate entities I believe, although that might not help given the level they're integrated into each other).