currently level 50 BLK - and about to switch to T3 resources, and i think ive decided to use the wood at Heather to take advantage of the JM shop bonus.

i assume i'll go all the way from 75 - 100 on T4 resources, and i want to plan in advance and commission some teched cargo gear to take me to 100 (i still use unteched T1 cargo)

so the question is, which T4 resource would you suggest levelling BLK (and where is it) ... ideally mob free, resource spawn density/distance from craft station, and player shop bonus are the criteria... all equally weighted.