Bit late but I think the spot of choice was "Scattered Cargo" on Port Breeze. Yes, it's a major pain in the keister.
- - - Updated - - -
I've only farmed half a brick so far thanks to both CCC and my deciding to buy four Beast Seals instead. Then again I doubt I'll be finishing even ONE Eternal before the next time Rise comes again, so I'm still doing okay on that regard, lol.