For what it's worth....
What I like about TDS is that the forums are split into the different generations of engine, so you know where people are coming from, plus I've made a lot of friends there. What I don't like about FTE is that all Powerstroke discussion is lumped into one forum, so there's a lot of confusion by newbies about whether what's being discussed can/will work on their truck. What I also don't like about
FTE is their policy of not allowing links to vendors that are not sponsors.
Keep these things in mind, if you would, because I'm probably not alone in my thinking.
Maybe it's the novelty of this being a new site, but when I log on three times a day, this is the place I come first, before TDS, FTE, or any of the other sites I visit while I'm "making my rounds."