It depends whether or not I like the already renovated updates. Sometimes I like the renovations that a prior homeowner did for themselves, but I generally don't like the flipped updates.
It would depend on the quality of the updates. The flipped houses I have seen use low quality materials so you basically have something new, but it's at the cheap end and may not last. I would go for a house that had been thoughtfully updated by previous owners who appreciated quality materials. Otherwise, I would get the DIY house and put in nice stuff (especially if I planned to live there for at least 10 years).