Seagate or Hitachi now, Samsung's tech already bought over by Seagate otherwise I would suggest that.
My 1TB WDC Green also having some bad sectors but solved by LLF (Low Level Format) it, got a permanent bad sector now, although can't warranty but seems fine, for now anyway.
Just watch the SMART to see which attribute is causing the corruption, mostly is the "Pending Sector Count" of which part file is unreadable thus corrupted the file. You can RMA again, if the warranty already out, backup all to external HDD and LLF it, you can use clone software such as Acronis for ease of backup and restore of all the files.
Hiren's bootCD (3rd party edition) has those Acronis boot (can't give links here) and also Mini XP which has the LLF software, convenient enough and can be done within few hours, with a few reboots of course.