my nanopi neo arrived today and i got a chance to try the new heatsinks i purchased off aliexpress for about $10 (20 heatsinks)
http://www.aliexpress.com/item/20-pieces-lot-Silvr-Heat-Sink-20x20x15mm-Router-IC-Heat-Sink-Aluminum-Cooling-Fin-20-20/32478830210.html
i can't seem to post images because of my low post count, but here is google+ album with details
https://goo.gl/photos/DyJ5NC7N8E1Co7tX7
TLDR: 41c at idle, 74~75c at full load (using cpuburn-a7)
hopefully someone finds this interesting. also notice that the heatsink doesn't quite fit over the soc and memory, so i split the difference.
Regards!