I don't have a Goliath so I can't speak about it but the Goblin is a really great atty. The deck is a little tight but I never had any particular difficulty with it. I have even used 28g dual coils in there with no problems. I consider it one of the best atties I have for both flavour and clouds for those times when you want to live on the edge.
Of course what I say about clouds is probably very relative since I'm not usually into clouds but as regards flavour I can vouch for it. One little drawback is that it is a bottom fill but I usually top fill it, especially if it is empty... I just hold the glass tank tightly down. Busardo has a very good video about it - shows you how to coil, wick and fill it in great detail.