I’m going through the forum and reading up on all topics that relate to this subject but can’t find anything reliable.
Most people seem to like Str. I’d prefer Dex for Crit+Evasion. I understand that you lose out on 10% of Str per rank but that might be worth it to me.
The question now becomes how much Str do you need in a Dex build?
Just as an example I’d try something like this. Monk points are open as the skills need to be tested in-game to see what works/is fun to use. You will notice Double Punch is missing as I went for high damage skills and Carve. (Saves me the Stamina?)
At level 280 you have 279 stat points to spend (without bonuses). Here now comes the challenge on how to distribute them.
- 68 for Con >>> gets you >>> 90 Con
- 57 for Str >>> gets you >>> 120 Str
- 145 for Dex >>> gets you >>> 194 Dex
The other way around you’d have:
- 68 for Con >>> gets you >>> 90 Con
- 116 for Str >>> gets you >>> 236 Str
- 95 for Dex >>> gets you >>> 120 Dex
As you can see the difference is about 42 points, but this gap will widen significantly with bonus points and later ranks.
If there is a Monk with a Dex build and level 200+ I’d highly appreciate hearing some first hand experience 
Anyone is of course welcome to comment.