Yup, HDD (and DVD media) for me as well, at least for the forseeable future. :)...wouldn't mind picking up a couple of SSDs at some point though drool.
I have the 223 as well, I have the SB03 firmware on it - it's advisable to update to that revision at least (there is a Sticky about it in our Samsung DVD Writer sub-forum). What firmware does your Sammy currently have - if you can't plug the drive in to find out, it should say on the sticker on the drive itself.
EDIT: Linky to Samsung firmware announcement here.
Although opinions on this Sammy drive model are mixed, I personally have had no problem with mine, it does what I need it to do both reading/ripping-wise, and burning-wise. As a bonus, it also seems to do well with burning mediocre quality media.
An SATA add-in card might be a cheaper option for you than a new mobo, although you may like to gather more opinions on what one to get, as some add-on card chipsets don't play well with SATA optical drives.