I don't see the Fanatec as much competition as it seems it's taking a while to catch on beyond "vdeo games", though the good there is that it IS the only real competition for the G-25/7.
I started with a used DFP and when I got my G-25 got what the hype was about. But I wonder now if future buyers of the G-27 will be told by their advisors to find a left over G-25 or buy a used one. Though I also looked for a used G-25 when I bought mine and found people were asking more for a used one then I could buy a new one for!!
And yes, the Frexx is in a whole different league. So far, I'm not so sure I'd get one if HAD the cash as I haven't seen a real review yet. Last videos they had it was squealing and sounding like someone was killing birds in it!
So, for the money, the G-27 and Fanatec are IT.
Above that is ARC's G25-E but they're still starting out and working on shipping etc.
Above THAT of course is the Frexx, but again, EXTREMELY expensive and dealing with them could be interesting as I suspect from their site, they may or may not speak a lot of English..