DVD Burners are very cheap these days, if you want one, i'd buy it now. It will probably still be months or years before BluRay disks/burners become a cost effective option.
I agree, deffinetly go with DVD burners, since there very cheap at only $30. While Blu-Ray readers are around the $700 range, and have lots of problems.
Personally I would steer clear of both BluRay and HDDVD for the time being. Otherwise you could find yourself with a very expensive Betamax clone. DVD-RW's are cheap, so get one of those.