I was at Boyahda Tree until 251... then I went to go get my Asuran Fists quest.
I got gains til 276 at Bostanieux after which they completely died.
At lv95 i was soloing Lacerators in Korroloka Tunnel (Near NIN Flag NMs) Stay away from the leeches tho unless your skills are closer to the cap. I've gone up to 340~ so far. I stopped because I went to play with friends, I haven't tried going back again.