Hey there,
It really depends, do you want to remove the links from Google ? if so then a 301 redirect will passes 90-99% of power / link juice to the URL you point it to plus tells Google this URL no longer exist at that location and therefore drops it from its index. If you do not want to drop the URLS within the index then a 302 is a good way to temporarily keep them there if you are going to reinstate them.