I wouldn't use NHC, as the owner hasn't been responding to alot of people that I know. He said he was on vacantion, but that can't be for 2 months.
TL;DR I would go for fulcrum.
You dont use nhc because of the support ? I bought fulcrum and it dindt work for me and I got no support only a skype group ... Nhc was 2-3 weeks on vacantion then he respond again .And Nhc have a support email they responding in hours so you tried it on skype but his skype get spammed and sometimes he's selling his bot/refs and cant respond or he's working on his homepage or bot.
My opinion is when Fulcrum work at youre pc and you want fast refs Fulcrum is the better choice because you can run more but with nhc you have a really safe bot and he is updating his bot every time.
imo, both supports are bad, but if you are choosing one, go for fulcrum. And atleast try to figure most of the things out yourself, instead of going to the developer.