Dublin, if you're considering FUE I wouldn't consider either Feller or Farjo. Feller I believe prices himself out of it, or at least for the majority, because he either doesnt like doing it and/or believes more in the success/ reliability of FUT. This is just my opinion from what I've read over the years.
Farjo I've never seen any FUE results, let alone anything of note.
No, of your list when it comes to FUE I would choose Bisanga without a doubt. And seriously consider Lorenzo or that guy in Turkey, his name escapes me just now but seen some truly impressive results from him, a few on here. That's it though. It's far too hit and miss and I would caution against it altogether unless you're adamant that it's your preferred route.
Like others I would encourage to review your shortlist having a good look at the best results on here and go from there. If you just do that it's a pretty good start.