I own the physical version, but I'm considering selling it and getting the digital version for convenience. But I have a couple of questions:
1) Does the digital version take up more HD space? Since you have to install physical games, it seems to me like it wouldn't.
2) Can you delete specific 360 games from your harddrive, in order to save space? When you put the physical disc in, it automatically installs the games for you (I assume it then reinstalls any if you have deleted them), but what happens if you delete any of the 360 games after buying the digital version?
Do you need your save files in the old 360 games to get any rewards for those games in Rare Replay?
I.E. I have:
175/200 in Perfect Dark 64
200/200 in Banjo Kazooie
1250/1250 in Banjo Nuts N Bolts
But I don't have any of those save files.
You can just start again, so you don't "need" any save files, but if you do transfer your saves via Cloud, you'll get a bunch of stamps at once (all the games that are on 360 unlock stamps by just earning certain gamerscore totals in that game.