Need some help regarding GTA 5

The retail DVD comes with serial number (social club activation only) so the dvds aren't much important as they only contain game data which is already available all over the internet & also in your rock-star social club account.It'll be useful of course in your case since your internet connection ain't good.However,If anything happened to one of these disks,You'll still have to download the game.In my opinion,You should get steam version and have some patience since rockstar social club accounts have very weak protection (Thousands of accounts email/pw were leaked upon the game release on pc).You'll still need to create rockstar social club account if u're getting it on steam,but in this case your rockstar account will be useless to any hacker since he'll need to have access to your steam account in order to play .

+1 to what ramyne9999 said but if you not bought it yet now just wait a few more days for summer sale, perhaps it will get at least a 15% discount.

I bought the DVD's and one of them was unreadable... so I had to download it anyway xd
If you really want it on steam and just expect to use the dvd to install it, you should get it on steam ;)