can you recommend me what should i use ? 
I don’t think that anyone can advise you as your selection really depends on your needs, your use, space needed, etc.
I have dropbox as it is very handy as it also allows me to use it on my Samsung Galaxy Nexus (Android 4.0.2), my win7 netbook and my XP Pro desktop.
I haven’t used skydrive, I know essexboy uses that but again I don’t know how that might suit your needs/requirements. I have never used gdrive, though if you mean google drive, I do use Google Docs on my Nexus, which is now all lumped together into google drive.
So all I can really suggest is you check out their features/specifications and see which matches your needs best.
Depends on which devices and operational system you would install besides the one you have in your signature.
Also, the free space released by each one.
okay thanks… ;D
You’re welcome.