What type of federal student loan is better to have: subsidized or unsubsidized?

With subsidized loans they are on a need basis and the government pays the interest while your in school. For unsubsidized loans they are available to anyone and the interest will start to build up from day 1 (but you pay the interest yourself while still in school if you want). So in reality a subsidized loan will be cheaper but not everyone can qualify for them.