I went with full VIT to get a bigger amount of HP. Granted, it's not necessary for me yet, but I've heard that later bosses do start hitting for a lot. I'd rather get used to that playstyle now than when the swap might be warranted.

The only things we have for surviving big hits are Foresight (which isn't even that strong) and our health pool. Paladins have plenty of cooldowns, which work as multipliers to their health pool, which is one of the reasons why paladins are often preferred over warriors.

STR will of course provide it's worth as long as you can get your self-heals in.

This is all just my opinion of course.