They aren't great, they have some delamination. I do have some of the aftermarket LED ones in my shop at the house that came off of his old GT. They are decent shape, been sitting for a while but are nice.
Could you post pics of both sets? One of my tailights has a lot of cracks so really anything would be an upgrade.
[Daily] 2002 GTP 40th Ann - FSIC, dp+plog, 3.3", ported LIM, HAI, front+rear sway bars, poly mounts, zzp tune for now :/
[Fun] 2012 mazdaspeed3 - dp, 3" intake, FMIC, HPFP, Custom tune, lots of other goodies