Old Magic: The Gathering & Grading

[Spacemanspif]

Hello, I have a bunch of old MTG cards and was wondering if people collect these graded or if they are better ungraded so they can still be played with. I sold off the vast majority (LCS took 10,000 plus cards a few years back) and so I'm really just talking about the dual lands and other high end rares ranging from Revised to Urza's. I haven't checked prices in a year or two but remember that condition did play a pretty big part in determining value which is why I am contemplating grading some of them. Any info is appreciated