Put $2K into a traditional account (either IRA or 401k) and you will save 25% on that due to the saver's credit.
Note that this assumes your AGI would be exactly $32K w/o the traditional contribution. You have to get your AGI to $30,000 or below (2016 numbers) to get this credit - at $30,001 you don't get it.
Past the $2K amount Roth might be better, as noted by other posters.