I've just done the Harrar as well, it's only days old, 4 I think, nope I lied it's only 2 (ran out of coffee), it's very strong, I definitely got a berry of sorts from my OHs this morning, not for mine this afternoon though. Oh it roasted very easily in the popper, just using my standard roasting profile, went 15 degrees over first crack which happened at 11:15, 201 degrees, total roast time was 15:15, two minutes for cooling in the popper, reached 40 degrees and packed away.