i used directnic over 2 years and then transfer all my domains to registerfly:
live support in directnic is not so LIVE ;) in registerfly you chat live
i you have big problem you can ask support to contact Tim is you have big problem and he never fails
registerfly is cheaper
in directnic cheapest offer to buy domains is
1 149 1.00
150 374 0.90
375 749 0.83
750 2999 0.77
3000 6000 0.72
it means when you spend with them 3000*,72=2160$ but it means you have 3000/15=200 domains
it means 0,72*15=10,8$ for ONE domain
in registerfly you start from level 9,99$ they have regular mailing offer 7,99$ - 8,99$ and of course FlyPacks where
the cheapest price is 7,25$
both have domain brokers platform for selling domains
and RegsterFly has connection with expired domains catching service called
ExpireFish