It really depends on what you want to use them for. Morale patches are typically used to attach to clothing or gear and are often used by military personnel and first responders to display unit insignia, rank, or other identifying information. Stickers, on the other hand, can be used for a wide variety of purposes and can be applied to a variety of surfaces. They are often used for decorative or promotional purposes.
Ultimately, the choice between morale patches and stickers will depend on your specific needs and preferences. If you want to display a message or symbol on your clothing or gear, then morale patches may be a better choice. If you want to decorate a surface or promote a brand or message, then stickers might be more suitable.