Besides buying more Diamond Age PLA, I also bought some from Repraper.com
So far the Repraper PLA is very true as far as roundness and uniformity goes.
It needs to be printed at a much higher temperature (215/210 for yellow, 220/215 for purple) It does not stick to Kapton tape as well, but glues down to painters tape really well with the bed at 65C (haven't tried without heated bed). I also spent a lot more time tweaking my Bukobot to get the repraper stuff printing well (and I still need to figure out a better cooling solution for both Repraper and Diamond Age.
Shipping-wise, both shipped quickly, I had the Diamong Age in a couple days, the Repraper was about a week as I recall.
I definitely prefer working with the Diamond Age, but I could get more than twice as much PLA from repraper for the same price, so I'll likely continue to split my orders between the companies. I've got 4kg of PLA and 2 of ABS now which will likely last me quite some time until my next order.