accurate conversion from word to pages and back
What's the latest situation with getting accurate conversion from word to pages and back? I edit professionally, and after getting this new iMac, I learned that Office for Mac 2011 has problems. Have those problems all been fixed, regarding Word, Excel, and Powerpoint? I'm not sure I care about the Outlook email part. If Office for Mac 2011 has updates that fix the problems, I still might prefer to buy that, even with the added cost, so that I don't always have to export back and forth. Who can give an unbiased answer as to which is going to save me time and hassles? Please don't suggest partitioning my hard drive and adding Windows to this new iMac. If I have to do that just to have hassle-free word processing with client documents, I'll abandon Apple and go back to PC.
iMac (21.5-inch, Late 2012), OS X Mountain Lion (10.8.2)