Assuming you go with good glass, you'll be able to tell either way whether it's matte or gloss, to it really comes down to personal preference.
It can, however, depend upon what paper you have it printed on. RC comes in a range of matte/gloss types. Regular FB paper has a bit of a sheen to it anyway. Matte FB can be nice but scratches really eaily. And gloss FB to me just looks kinda weird.