In general, you would be able to burn all dvd formats except DVD-RAM.
Are you interested in buring Video? If so, make sure you get a drive that can bitset +R and +R DL disks to DVD-ROM in order to increase compatablity of stand alone dvd players.
No matter what burner you get, try to use quality media. For single layer + and - R's, most people recommend using verbatim or taiyo yuden made blanks. For DL burning, use only verbatim.