What is the best amount of DEX to have?

I have 50 dex on my Sader and I'm pretty happy with it.

You won't do as high as damage as dexless saders, but you save a ton of money. No need to buy accuracy pills, no need to spend hundreds of millions on accuracy scrolls or scrolled items. I do have a few accuracy items (shoes and Z-helm) but when I do get a few spare mesos, I look for str and atk based items.

So you don't ever have any real accuracy problems with your DEX at level 50 and you save a pretty good amount of money, So then 60 is too much?